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Author	Zelonka, K.; Sayer, M.; Freundorfer, A.P.; Hadermann, J.
Title	Hydrothermal processing of barium strontium titanate sol-gel composite thin films			Type	A1 Journal article
Year	2006	Publication	Journal of materials science	Abbreviated Journal	J Mater Sci
Volume	41	Issue	12	Pages	3885-3897
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000239022100043	Publication Date	2006-04-15
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-2461;1573-4803;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.599	Times cited	10	Open Access
Notes				Approved	Most recent IF: 2.599; 2006 IF: 0.999
Call Number	UA @ lucian @ c:irua:60566			Serial	1539
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Author	Saniz, R.; Sarmadian, N.; Partoens, B.; Batuk, M.; Hadermann, J.; Marikutsa, A.; Rumyantseva, M.; Gaskov, A.; Lamoen, D.
Title	First-principles study of CO and OH adsorption on in-doped ZnO surfaces			Type	A1 Journal article
Year	2019	Publication	The journal of physics and chemistry of solids	Abbreviated Journal	J Phys Chem Solids
Volume	132	Issue		Pages	172-181
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT); Condensed Matter Theory (CMT)
Abstract	We present a first-principles computational study of CO and OH adsorption on non-polar ZnO (10¯10) surfaces doped with indium. The calculations were performed using a model ZnO slab. The position of the In dopants was varied from deep bulk-like layers to the surface layers. It was established that the preferential location of the In atoms is at the surface by examining the dependence of the defect formation energy as well as the surface energy on In location. The adsorption sites on the surface of ZnO and the energy of adsorption of CO molecules and OH-species were determined in connection to In doping. It was found that OH has higher bonding energy to the surface than CO. The presence of In atoms at the surface of ZnO is favorable for CO adsorption, resulting in an elongation of the C-O bond and in charge transfer to the surface. The effect of CO and OH adsorption on the electronic and conduction properties of surfaces was assessed. We conclude that In-doped ZnO surfaces should present a higher electronic response upon adsorption of CO.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000472124700023	Publication Date	2019-04-25
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-3697	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.059	Times cited	7	Open Access	Not_Open_Access: Available from 26.04.2021
Notes	FWO-Vlaanderen, G0D6515N ; ERA.Net RUS Plus, 096 ; VSC; HPC infrastructure of the University of Antwerp; FWO-Vlaanderen; Flemish Government-department EWI;			Approved	Most recent IF: 2.059
Call Number	EMAT @ emat @UA @ admin @ c:irua:159656			Serial	5170
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Author	Gillie, L.J.; Palmer, H.M.; Wright, A.J.; Hadermann, J.; Van Tendeloo, G.; Greaves, C.
Title	Crystallographic and magnetic structures of Y_0.8Sr_2.2Mn₂GaO_8-\delta: a new vacancy-ordered perovskite structure			Type	A1 Journal article
Year	2004	Publication	The journal of physics and chemistry of solids	Abbreviated Journal	J Phys Chem Solids
Volume	65	Issue		Pages	87-93
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	New York, N.Y.	Editor
Language		Wos	000188127400014	Publication Date	2003-10-16
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-3697;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.059	Times cited	15	Open Access
Notes				Approved	Most recent IF: 2.059; 2004 IF: 0.988
Call Number	UA @ lucian @ c:irua:43875			Serial	585
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Author	Fedotov, S.S.; Kuzovchikov, S.M.; Khasanova, N.R.; Drozhzhin, O.A.; Filimonov, D.S.; Karakulina, O.M.; Hadermann, J.; Abakumov, A.M.; Antipov, E.V.
Title	Synthesis, structure and electrochemical properties of LiNaCo0.5Fe0.5PO4F fluoride-phosphate			Type	A1 Journal article
Year	2016	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	242	Issue	242	Pages	70-77
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	LiNaCo 0.5 Fe 0.5 PO 4 F fluoride-phosphate was synthesized via conventional solid-state and novel freeze-drying routes. The crystal structure was refined based on neutron powder diffraction (NPD) data and validated by electron diffraction (ED) and high-resolution transmission electron microscopy (HRTEM). The alkali ions are ordered in LiNaCo 0.5 Fe 0.5 PO 4 F and the transition metals jointly occupy the same crystallographic sites. The oxidation state and oxygen coordination environment of the Fe atoms were verified by 57 Fe Mössbauer spectroscopy. Electrochemical tests of the LiNaCo 0.5 Fe 0.5 PO 4 F cathode material demonstrated a reversible activity of the Fe 3+ /Fe 2+ redox couple at the electrode potential near 3.4 V and minor activity of the Co 3+ /Co 2+ redox couple over 5 V vs Li/Li + . The material exhibits a good capacity retention in the 2.4÷4.6 V vs Li/Li + potential range with the delivered discharge capacity of more than 82% (theo.) regarding Fe 3+ /Fe 2+ .
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000383304900010	Publication Date	2016-02-27
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	1	Open Access
Notes	The authors kindly thank Dr. O. A. Shlyakhtin for the assistance in the freeze-drying synthesis. We are grateful to the Laboratory for Neutron Scattering and Imaging (NLS) at the Paul Scherrer Institut (Villigen, Switzerland) for granting beam time at the HRPT diffractometer and to Dr. D. V. Sheptyakov for the technical support during the experiment. The work was partly supported by Russian Foundation for Basic Research (RFBR grant 13-03-00495a, 14-29-04064 ofim, 16-33-01131 mola), Skoltech Center for Electrochemical Energy Storage and Moscow State University Development Program up to 2020. J. Hadermann, O.M. Karakulina and A.M. Abakumov acknowledge support from FWO under grant G040116N.			Approved	Most recent IF: 2.299
Call Number	c:irua:133776			Serial	4075
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Author	Tang, Y.; Hunter, E.C.; Battle, P.D.; Sena, R.P.; Hadermann, J.; Avdeev, M.; Cadogan, J.M.
Title	Structural chemistry and magnetic properties of the perovskite Sr₃Fe₂TeO₉			Type	A1 Journal article
Year	2016	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	242	Issue	242	Pages	86-95
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A polycrystalline sample of perovskite-like Sr3Fe2TeO9 has been prepared in a solid-state reaction and studied by a combination of electron microscopy, Mossbauer spectroscopy, magnetometry, X-ray diffraction and neutron diffraction. The majority of the reaction product is shown to be a trigonal phase with a 2:1 ordered arrangement of Fe3+ and Te6+ cations. However, the sample is prone to nano twinning and tetragonal domains with a different pattern of cation ordering exist within many crystallites. Antiferromagnetic ordering exists in the trigonal phase at 300 K and Sr3Fe2TeO9 is thus the first example of a perovskite with 2:1 trigonal cation ordering to show long-range magnetic order. At 300 K the antiferromagnetic phase coexists with two paramagnetic phases which show spin -glass behaviour below similar to 80 K. (C) 2016 The Authors. Published by Elsevier Inc.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000382429600012	Publication Date	2016-06-29
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	12	Open Access
Notes				Approved	Most recent IF: 2.299
Call Number	UA @ lucian @ c:irua:135682			Serial	4310
Permanent link to this record



Author	Sena, R.P.; Hadermann, J.; Chin, C.-M.; Hunter, E.C.; Battle, P.D.
Title	Structural chemistry and magnetic properties of the perovskite SrLa₂Ni₂TeO₉			Type	A1 Journal article
Year	2016	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	243	Issue	243	Pages	304-311
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A polycrystalline sample of SrLa2Ni2TeO9 has been synthesized using a standard ceramic method and characterized by neutron diffraction, magnetometry and electron microscopy. The compound adopts a monoclinic, perovskite-like structure with space group P2(1)/n in and unit cell parameters a=5.6008(1), b = 5.5872(1), c=7.9018(2) angstrom, p=90.021(6)degrees at room temperature. The two crystallographically-distinct B sites are occupied by Ni2+ and Te6+ in ratios of 83:17 and 50:50. Both ac and dc magnetometry suggest that the compound is a spin glass below 35 K but the neutron diffraction data show that some regions of the sample are antiferromagnetic. Electron microscopy revealed twinning on a nanoscale and local variations in composition. These defects are thought to be responsible for the presence of two distinct types of antiferromagnetic ordering. (C) 2016 The Authors. Published by Elsevier Inc.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000384874100041	Publication Date	2016-09-09
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	6	Open Access
Notes				Approved	Most recent IF: 2.299
Call Number	UA @ lucian @ c:irua:137232			Serial	4403
Permanent link to this record



Author	Ben Hafsia, A.; Hendrickx, M.; Batuk, M.; Khitouni, M.; Hadermann, J.; Greneche, J.-M.; Rammeh, N.
Title	Crystal structure study of manganese and titanium substituted BaLaFe2O6-δ			Type	A1 Journal article
Year	2017	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	251	Issue	251	Pages	186-193
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Barium lanthanum ferrite and four Mn/Ti substituted materials were synthesized by the sol-gel method. The crystal structure of the materials was studied by a combination of X-ray powder diffraction, electron diffraction, scanning transmission electron microscopy and 57Fe Mössbauer spectrometry. BaLaFe2O6-δ has a cubic perovskite structure and Ba0.7La1.3FeMnO6-δ is distorted perovskite with the R-3c symmetry, both from electron diffraction and X-ray powder diffraction. However, according to transmission electron microscopy, the crystals of BaLaFeTiO6-δ, BaLaFeTi0.5Mn0.5O6-δ, and BaLaFe0.5Ti0.5MnO6-δ consist of nanodomains with different symmetries (Pm3m next to R-3c due to octahedral tilts), whereas the bulk X-ray powder diffraction patterns for these compounds correspond to the simple cubic structure. 57Fe Mössbauer spectrometry confirms that all materials contain high spin state Fe3+ ions which are strongly influenced by the chemical disorder resulting from various cationic environments.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000402581200024	Publication Date	2017-04-20
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited		Open Access	Not_Open_Access
Notes	This study has been supported by the Tunisian Ministry of Higher Education and Scientific Research and by the University of Antwerp BOF Grant 33024 funding scheme.			Approved	Most recent IF: 2.299
Call Number	EMAT @ emat @ c:irua:143988			Serial	4582
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Author	Hunter, E.C.; Battle, P.D.; Sena, R.P.; Hadermann, J.
Title	Ferrimagnetism as a consequence of cation ordering in the perovskite LaSr2Cr2SbO9			Type	A1 Journal article
Year	2017	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	248	Issue		Pages	96-103
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A polycrystalline sample of LaSr2Cr2SbO9 has been synthesised using a standard ceramic method and characterized by x-ray and neutron diffraction, magnetometry and electron microscopy. The perovskite-related compound crystallises in the triclinic space group I1 with unit cell parameters of a=5.5344(6) angstrom, b=5.5562(5) angstrom, c=7.8292(7) angstrom, a=89.986(12)degrees, beta=90.350(5)degrees and gamma=89.926(9)degrees at room temperature. The two crystallographically-distinct, six-coordinate cation sites are occupied by Cr3+ and Sb5+ in ratios of 0.868(2):0.132(2) and 0.462(2):0.538(2). Ac and de magnetometry revealed that LaSr2Cr2SbO9 is ferrimagnetic below 150 K with a magnetisation of similar to 1.25 mu(B) per formula unit in 50 kOe at 5 K. Neutron diffraction showed that the cations on the two sites order in a G-type arrangement with a mean Cr3+ moment of 2.17(1) mu(B) at 5 K, consistent with a magnetisation of 1.32 mu(B) per formula unit.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000396386300012	Publication Date	2017-01-31
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	14	Open Access	Not_Open_Access
Notes	; Experiments at the ISIS Pulsed Neutron and Muon Source were supported by the STFC. We are grateful to I. da Silva for the assistance provided at ISIS and to the EPSRC for financial support under Grant EP/M018954/1. We also thank Diamond Light Source Ltd (EE13284) for the award of beamtime. ;			Approved	Most recent IF: 2.299
Call Number	UA @ lucian @ c:irua:142413			Serial	4657
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Author	Chin, C.-M.; Sena, R.P.; Hunter, E.C.; Hadermann, J.; Battle, P.D.
Title	Interplay of structural chemistry and magnetism in perovskites : a study of CaLn₂Ni₂WO₉: Ln=La, Pr, Nd			Type	A1 Journal article
Year	2017	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	251	Issue		Pages	224-232
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Polycrystalline samples of CaLn(2)Ni(2)WO(9) (Ln=La, Pr, Nd) have been synthesized and characterised by a combination of X-ray and neutron diffraction, electron microscopy and magnetometry. Each composition adopts a perovskite-like structure with a similar to 5.50, b similar to 5.56, c similar to 7.78 angstrom beta similar to 90.1 degrees in space group P2(1)/n. Of the two crystallographically distinct six-coordinate sites, one is occupied entirely (Ln=Pr) or predominantly (Ln=La, Nd) by Ni2+ and the other by Ni2+ and W6+ in a ratio of approximately 1:2. None of the compounds shows long-range magnetic order at 5 K. The magnetometry data show that the magnetic moments of the Ni2+ cations form a spin glass below 30 K in each case. The Pr3+ moments in CaPr2Ni2WO9 also freeze but the Nd3+ moments in CaNd2Ni2WO9 do not. This behaviour is contrasted with that observed in other (A,A')B2B'O-9 perovskites.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000402581200030	Publication Date	2017-04-22
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	5	Open Access	OpenAccess
Notes	; We thank EPSRC for funding through grant EP/M0189541. CMC thanks the Croucher Foundation and Oxford University for a graduate scholarship. We are grateful to Ivan da Silva who provided experimental assistance at ISIS and to Maria Batuk for help with the STEM-EDX analysis. ;			Approved	Most recent IF: 2.299
Call Number	UA @ lucian @ c:irua:144179			Serial	4664
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Author	Tang, Y.; Sena, R.P.; Aydeev, M.; Battle, P.D.; Cadogan, J.M.; Hadermann, J.; Hunter, E.C.
Title	Magnetic properties of the 6H perovskite Ba₃Fe₂TeO₉			Type	A1 Journal article
Year	2017	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	253	Issue		Pages	347-354
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A polycrystalline sample of Ba3Fe2TeO9 having the 6H perovskite structure has been prepared in a solid-state reaction and studied by a combination of electron microscopy, Mossbauer spectroscopy, magnetometry, X-ray diffraction and neutron diffraction. Partial ordering of Fe3+ and Te6+ cations occurs over the six-coordinate sites; the corner-sharing octahedra are predominantly occupied by the former and the face-sharing octahedra by a 1:1 mixture of the two. On cooling through the temperature range 18 < T/K < 295 an increasing number of spins join an antiferromagnetic backbone running through the structure while the remainder show complex relaxation effects. At 3 K an antiferromagnetic phase and a spin glass coexist.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000406572600047	Publication Date	2017-06-22
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	6	Open Access	OpenAccess
Notes	; We thank EPSRC for financial support through grant EP/M018954/1. ;			Approved	Most recent IF: 2.299
Call Number	UA @ lucian @ c:irua:145692			Serial	4743
Permanent link to this record



Author	Chin, C.-M.; Battle, P.D.; Blundell, S.J.; Hunter, E.; Lang, F.; Hendrickx, M.; Sena, R.P.; Hadermann, J.
Title	Comparative study of the magnetic properties of La₃Ni₂B'O₉ for B' = Nb, Ta or Sb			Type	A1 Journal article
Year	2018	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	258	Issue	258	Pages	825-834
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Polycrystalline samples of La3Ni2NbO9 and La3Ni2TaO9 have been characterised by X-ray and neutron diffraction, electron microscopy, magnetometry and muon spin relaxation (mu SR); the latter technique was also applied to La3Ni2SbO9. On the length scale of a neutron diffraction experiment, the six-coordinate sites of the monoclinic perovskite structure are occupied in a 1:1 ordered manner by Ni and a random 1/3Ni/2/3B' mixture. Electron microscopy demonstrated that this 1:1 ordering is maintained over microscopic distances, although diffuse scattering indicative of short-range ordering on the mixed site was observed. No magnetic Bragg scattering was observed in neutron diffraction patterns collected from La3Ni2B'O-9 (B' = Nb or Ta) at 5 K although in each case mu SR identified the presence of static spins below 30 K. Magnetometry showed that La3Ni2NbO9 behaves as a spin glass below 29 K but significant short-range interactions are present in La3Ni2NbO9 below 85 K. The contrasting properties of these compounds are discussed in terms of their microstructure.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000423650400107	Publication Date	2017-12-20
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	6	Open Access	Not_Open_Access
Notes	; We thank EPSRC for funding through Grants EP/M0189541 and EP/N023803. CMC thanks the Croucher Foundation and Oxford University for a graduate scholarship. We are grateful E. Suard for experimental assistance at ILL. ;			Approved	Most recent IF: 2.299
Call Number	UA @ lucian @ c:irua:149284			Serial	4928
Permanent link to this record



Author	Istomin, S.Y.; Morozov, A.V.; Abdullayev, M.M.; Batuk, M.; Hadermann, J.; Kazakov, S.M.; Sobolev, A.V.; Presniakov, I.A.; Antipov, E.V.
Title	High-temperature properties of (La,Ca)(Fe,Mg,Mo)O_3-\delta perovskites as prospective electrode materials for symmetrical SOFC			Type	A1 Journal article
Year	2018	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	258	Issue	258	Pages	1-10
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	La1-yCayFe0.5+x(Mg,Mo)(0.5-x)O3-delta oxides with the orthorhombic GdFeO3-type perovskite structure have been synthesized at 1573 K. Transmission electron microscopy study for selected samples shows the coexistence of domains of perovskite phases with ordered and disordered B-cations. Mossbauer spectroscopy studies performed at 300 K and 573 K show that while compositions with low Ca-content (La0.55Ca0.45Fe0.5Mg0.2625Mo0.2375O3-delta and La0.5Ca0.5Fe0.6Mg0.175Mo0.225O3-delta) are nearly oxygen stoichiometric, La0.2Ca0.8Fe0.5Mg0.2625Mo0.2375O3-delta is oxygen deficient with delta approximate to 0.15. Oxides are stable in reducing atmosphere (Ar/H-2, 8%) at 1173 K for 12 h. No additional phases have been observed at XRPD patterns of all studied perovskites and Ce1-xGdxO2-x/2 electrolyte mixtures treated at 1173-1373K, while Fe-rich compositions (x >= 0.1) react with Zr1-xYxO2-x/2 electrolyte above 1273 K. Dilatometry studies reveal that all samples show rather low thermal expansion coefficients (TECs) in air of 11.4-12.7 ppm K-1. In reducing atmosphere their TECs were found to increase up to 12.1-15.4 ppm K-1 due to chemical expansion effect. High-temperature electrical conductivity measurements in air and Ar/H-2 atmosphere show that the highest conductivity is observed for Fe- and Ca-rich compositions. Moderate values of electrical conductivity and TEC together with stability towards chemical interaction with typical SOFC electrolytes make novel Fe-containing perovskites promising electrode materials for symmetrical solid oxide fuel cell.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000423650400001	Publication Date	2017-10-11
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	5	Open Access	Not_Open_Access
Notes	; This work was financially supported by Russian Science Foundation (project number 16-13-10327). ;			Approved	Most recent IF: 2.299
Call Number	UA @ lucian @ c:irua:149283			Serial	4936
Permanent link to this record



Author	Chin, C.-M.; Battle, P.D.; Hunter, E.C.; Avdeev, M.; Hendrickx, M.; Hadermann, J.
Title	Stabilisation of magnetic ordering in La₃Ni_2-xCu_xB'O₉(B'=Sb,Ta,Nb) by the introduction of Cu²⁺			Type	A1 Journal article
Year	2019	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	276	Issue	276	Pages	164-172
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	La3Ni2-xCuxB'O-9 (x = 0.25; B' = Sb, Ta, Nb: x = 0.5; B' = Nb) have been synthesized and characterised by transmission electron microscopy, neutron diffraction and magnetometry. Each adopts a perovskite-like structure (space group P2(1)/n) with two crystallographically-distinct six-coordinate sites, one occupied by a disordered arrangement of Ni2+ and Cu2+ and the other by a disordered similar to 1:2 distribution of Ni2+ and B'(5+), although some Cu2+ is found on the latter site when x = 0.5. Each composition undergoes a magnetic transition in the range 90 <= T/K <= 130 and shows a spontaneous magnetisation at 5 K; the transition temperature always exceeds that of the x = 0 composition by >= 30 K. A long-range ordered G-type ferrimagnetic structure is present in each composition, but small relaxor domains are also present. This contrasts with the pure relaxor and spin-glass behaviour of x = 0, B' = Ta, Nb, respectively.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000473372400023	Publication Date	2019-05-09
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	2	Open Access
Notes	; We thank EPSRC for funding through grant EP/M0189541. CMC thanks the Croucher Foundation and the University of Oxford for the award of a graduate scholarship. ;			Approved	Most recent IF: 2.299
Call Number	UA @ admin @ c:irua:161199			Serial	5396
Permanent link to this record



Author	Kirsanova, M.A.; De Sloovere, D.; Karakulina, O.M.; Hadermann, J.; Van Bael, M.K.; Hardy, A.; Abakumov, A.M.
Title	Toward unlocking the Mn³⁺/Mn²⁺ redox pair in alluaudite-type Na_2+2zMn_2-z(SO₄)_3-x(SeO₄)_x cathodes for sodium-ion batteries			Type	A1 Journal article
Year	2019	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	277	Issue	277	Pages	804-810
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	In polyanion cathodes, the inductive effect alters the potential of a M(n+1)+/Mn+ redox couple (M – transition metal) according to the electronegativity of the X cation in the polyanion groups (XO4m+). To manipulate the operating potential, we synthesized a series of mixed sulfate-selenate alluaudites, with structure formulas Na2+2zMn2-z(SO4)(3-x)(SeO4)(x) and Na2.81Ni1.60(SO4)(1.43)(SeO4)(1.57). Their crystal structure was determined from powder X-ray diffraction data, revealing that the Mn-based alluaudites form solid solutions with the same crystal structure for x = 0.75; 1.125 and 1.5. Na2.81Ni1.60(SO4)(1.43)(SeO4)(1.57) is isostructural to the Mn-based alluaudites. Although the Na2+2zMn2-z(SO4)(3-x)(SeO4)(x) compound with the highest selenium content demonstrates a reversible discharge capacity of 60 mAh g(-1), only a small part of this electrochemical activity can be ascribed to the Mn3+/Mn2+ redox couple. The redox potential of the Mn3+/Mn2+ pair in Na2+2zMn2-z(SO4)(3-)x(SeO4)(x) decreases with increasing values of x, in agreement with the lower electronegativity of Se compared to that of S.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000481726300103	Publication Date	2019-07-24
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record
Impact Factor	2.299	Times cited		Open Access
Notes	; The authors thank the Russian Foundation for Basic Research for financial support (grant 17-03-00370), in addition to Research Foundation-Flanders (project No G040116). ;			Approved	Most recent IF: 2.299
Call Number	UA @ admin @ c:irua:162852			Serial	5401
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Author	Hendrickx, M.; Tang, Y.; Hunter, E.C.; Battle, P.D.; Cadogan, Jm.; Hadermann, J.
Title	CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A = Ca, Sr, Ba): cation-ordered, inhomogeneous, ferrimagnetic perovskites			Type	A1 Journal article
Year	2020	Publication	Journal Of Solid State Chemistry	Abbreviated Journal	J Solid State Chem
Volume	285	Issue		Pages	121226
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Polycrystalline samples of CaLa2FeCoSbO9 and ALa2FeNiSbO9 (A=Ca, Sr, Ba) have been prepared in solid-state reactions and studied by a combination of transmission electron microscopy, magnetometry, X-ray diffraction, neutron diffraction and Mössbauer spectroscopy. Diffraction and TEM showed that each shows 1:1 B-site ordering in which Co2+/Ni2+ and Sb5+ tend to occupy two distinct crystallographic sites while Fe3+ is distributed over both sites. While X-ray and neutron diffraction agreed that all four compositions are monophasic with space group P21/n, TEM revealed different levels of compositional inhomogeneity at the subcrystal scale, which, in the case of BaLa2FeNiSbO9, leads to the occurrence of both a P21/n and an I2/m phase. Magnetometry and neutron diffraction show that these perovskites are ferrimagnets with a G-type magnetic structure. Their relatively low magnetisation can be attributed to their inhomogeneity. This work demonstrates the importance of studying the microstructure of complex compositions.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000521107900017	Publication Date	2020-01-30
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	3.3	Times cited		Open Access	OpenAccess
Notes	PDB, ECH, and JH acknowledge support from EPSRC under grant EP/M0189954/1. We would also like to thank E. Suard at ILL and I. Da Silva at ISIS for the experimental assistance they provided.			Approved	Most recent IF: 3.3; 2020 IF: 2.299
Call Number	EMAT @ emat @c:irua:167137			Serial	6345
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Author	Chin, C.–M.; Battle, P.D.; Hunter, E.C.; Avdeev, M.; Hendrickx, M.; Hadermann, J.
Title	Magnetic properties of La3Ni2Sb Ta Nb1––O9; from relaxor to spin glass			Type	A1 Journal article
Year	2019	Publication	Journal of solid state chemistry (Print)	Abbreviated Journal	Journal of Solid State Chemistry
Volume	273	Issue		Pages	175-185
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Neutron diffraction experiments conducted at 5 K in a magnetic field 0 < H/kOe < 50 have shown that the monoclinic perovskite La3Ni2TaO9 behaves as a relaxor ferromagnet. Compositions in the series La3Ni2SbxTayNb1–x–yO9 have been synthesized in polycrystalline form. Electron microscopy, X–ray diffraction and neutron diffraction have shown that the solid solutions are largely homogeneous and monophasic. Magnetometry and neutron diffraction have shown that the relaxor magnetisation persists in low fields when x + y = 1 but is rapidly diminished by the introduction of niobium. This change in magnetic behaviour is ascribed to the differences in the d–orbital energies of Sb5+, Nb5+ and Ta5+.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000466261100026	Publication Date	2019-03-02
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor		Times cited		Open Access
Notes	We thank EPSRC for funding through grant EP/M0189541. CMC thanks the Croucher Foundation and the University of Oxford for the award of a graduate scholarship.			Approved	no
Call Number	EMAT @ emat @c:irua:166445			Serial	6346
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Author	Parsons, T.G.; Hadermann, J.; Halasyamani, P.S.; Hayward, M.A.
Title	Preparation of the noncentrosymmetric ferrimagnetic phase La_0.9Ba_0.1Mn_0.96O_2.43 by topochemical reduction			Type	A1 Journal article
Year	2020	Publication	Journal Of Solid State Chemistry	Abbreviated Journal	J Solid State Chem
Volume	287	Issue		Pages	121356-121357
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Topochemical reduction of La0.9Ba0.1MnO3 with NaH at 225 degrees C yields the brownmillerite phase La0.9Ba0.1MnO2.5. However, reduction with CaH2 at 435 degrees C results in the formation of La0.9Ba0.1Mn0.96O2.43 via the deintercalation of both oxide anions and manganese cations from the parent perovskite phase. Electron and neutron diffraction data reveal La0.9Ba0.1Mn0.96O2.43 adopts a complex noncentrosymmetric structure, described in space group I23, confirmed by SHG measurements. Low-temperature neutron diffraction data reveal La0.9Ba0.1Mn0.96O2.43 adopts an ordered magnetic structure in which all the nearest neighbor interactions are antiferromagnetic. However, the presence of ordered manganese cation-vacancies results in a net ferrimagnetic structure with net saturated moment of 0.157(2) mu B per manganese center.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000533632700029	Publication Date	2020-04-05
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record
Impact Factor	3.3	Times cited		Open Access	Not_Open_Access
Notes	; We thank the EPSRC for funding this work and E. Suard for assisting with the collection of the neutron powder diffraction data. PSH thanks the Welch Foundation (Grant E-1457) for support. ;			Approved	Most recent IF: 3.3; 2020 IF: 2.299
Call Number	UA @ admin @ c:irua:169450			Serial	6583
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Author	Hendrickx, M.; Tang, Y.; Hunter, E.C.; Battle, P.D.; Hadermann, J.
Title	Structural and magnetic properties of the perovskites A₂LaFe₂SbO₉ (A = Ca, Sr, Ba)			Type	A1 Journal article
Year	2021	Publication	Journal Of Solid State Chemistry	Abbreviated Journal	J Solid State Chem
Volume	295	Issue		Pages	121914
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Polycrystalline samples of A(2)LaFe(2)SbO(9) (A = Ca, Sr, Ba) perovskites appeared monophasic to X-ray or neutron powder diffraction but a single-crystal study utilising transmission electron microscopy revealed a greater level of complexity. Although local charge balance is maintained, compositional and structural variations are present among and within the submicron-sized crystals. Despite the inhomogeneity, A = Ca is monophasic with a partially-ordered distribution of Fe3+ and Sb5+ cations across two crystallographically-distinct octahedral sites, i.e. Ca2La(Fe1.25Sb0.25)(2d) (Fe0.75Sb0.75)(2c)O-9. For A = Sr or Ba, the inhomogeneities result in differences in the filling patterns of the octahedra and the ordering of the B cations. Particles of A = Sr contain a phase (Fe:Sb similar to 2:1) without B cation ordering and one (Fe:Sb similar to 1:1) with B cation ordering. Monophasic A = Ba lacks long-range cation order although ordered nanodomains are present within the disordered phase. The temperature dependence of the magnetic properties of each sample is discussed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000615711800013	Publication Date	2020-12-17
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited		Open Access	OpenAccess
Notes				Approved	Most recent IF: 2.299
Call Number	UA @ admin @ c:irua:176663			Serial	6739
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Author	Abakumov, A.M.; Hadermann, J.; Van Tendeloo, G.; Shpanchenko, R.V.; Oleinikov, P.N.; Antipov, E.V.
Title	Anion ordering in fluorinated La2CuO4			Type	A1 Journal article
Year	1999	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	142	Issue		Pages	311-322
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000078597400024	Publication Date	2002-10-07
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	20	Open Access
Notes				Approved	Most recent IF: 2.299; 1999 IF: 1.547
Call Number	UA @ lucian @ c:irua:29277			Serial	121
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Author	Yang, T.; Perkisas, T.; Hadermann, J.; Croft, M.; Ignatov, A.; Greenblatt, M.
Title	B-site ordered perovskite LaSrMnNbO₆ : synthesis, structure and antiferromagnetism			Type	A1 Journal article
Year	2010	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	183	Issue	11	Pages	2689-2694
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	LaSrMnNbO6 has been synthesized by high temperature solid state reaction under 1% H2/Ar dynamic flow. The structure is determined by Rietveld refinement of the powder X-ray diffraction data. It crystallizes in the monoclinic space group P21/n with the unit cell parameters: a=5.69187(12), b=5.74732(10), c=8.07018(15) Å and β=90.0504(29)°, which were also confirmed by electron diffraction. The Mn2+ and Nb5+ ions, whose valence states are confirmed by X-ray absorption near-edge spectroscopy, are almost completely ordered over the B-site (<1% inversion) of the perovskite structure due to the large differences of both cationic size (0.19 Å) and charge. The octahedral framework displays significant tilting distortion according to Glazers tilt system a−b−c+. Upon heating, LaSrMnNbO6 decomposes at 690 °C under O2 flow or at 775 °C in air. The magnetic susceptibility data indicate the presence of long-range antiferromagnetic ordering at TN=8 K; the experimentally observed effective paramagnetic moment, μeff=5.76 μB for high spin Mn2+ (3d5, S=5/2) is in good agreement with the calculated value (μcalcd=5.92 μB).
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000284179800028	Publication Date	2010-09-13
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	13	Open Access
Notes	Esteem 026019			Approved	Most recent IF: 2.299; 2010 IF: 2.261
Call Number	UA @ lucian @ c:irua:85805			Serial	212
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Author	Abakumov, A.M.; d' Hondt, H.; Rossell, M.D.; Tsirlin, A.A.; Gutnikova, O.; Filimonov, D.S.; Schnelle, W.; Rosner, H.; Hadermann, J.; Van Tendeloo, G.; Antipov, E.V.
Title	Coupled anion and cation ordering in Sr₃RFe₄O_10.5 (R=Y, Ho, Dy) anion-deficientperovskites			Type	A1 Journal article
Year	2010	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	183	Issue	12	Pages	2845-2854
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The Sr3RFe4O10.5 (R=Y, Ho, Dy) anion-deficient perovskites were prepared using a solid-state reaction in evacuated sealed silica tubes. Transmission electron microscopy and 57Fe Mössbauer spectroscopy evidenced a complete A-cations and oxygen vacancies ordering. The structure model was further refined by ab initio structure relaxation, based on density functional theory calculations. The compounds crystallize in a tetragonal a≈2√2ap≈11.3 Å, с≈4сp≈16 Å unit cell (ap: parameter of the perovskite subcell) with the P42/mnm space group. Oxygen vacancies reside in the (FeO5/4□3/4) layers, comprising corner-sharing FeO4 tetrahedra and FeO5 tetragonal pyramids, which are sandwiched between the layers of the FeO6 octahedra. Smaller R atoms occupy the 9-fold coordinated position, whereas the 10-fold coordinated positions are occupied by larger Sr atoms. The Fe sublattice is ordered aniferromagnetically up to at least 500 K, while the rare-earth sublattice remains disordered down to 2 K.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000285431100014	Publication Date	2010-10-02
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	8	Open Access
Notes				Approved	Most recent IF: 2.299; 2010 IF: 2.261
Call Number	UA @ lucian @ c:irua:88071			Serial	533
Permanent link to this record



Author	Tarakina, N.V.; Nikulina, E.A.; Hadermann, J.; Kellerman, D.G.; Tyutunnik, A.P.; Berger, I.F.; Zubkov, V.G.; Van Tendeloo, G.
Title	Crystal structure and magnetic properties of complex oxides Mg_4-xNi_xO₉, 0\leq x\leq4			Type	A1 Journal article
Year	2007	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	180	Issue	11	Pages	3180-3187
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	In the Mg4−xNixNb2O9 (0x4) system two ranges of solid solution have been found. One of the solid solutions has a corundum-related structure type (space group ); the second one adopts the II-Ni4Nb2O9 structure type (space group Pbcn). The unit cell constants and atomic positions have been determined and refined using neutron powder diffraction data. Electron diffraction and high-resolution transmission electron microscopy (HRTEM) from MgNi3Nb2O9 crystals identify the presence of planar defects and the intergrowth of several (structurally related) phases. The magnetic susceptibility of Mg3NiNb2O9, measured in the temperature range T=2300 K, shows no indications of magnetic ordering at low temperatures, while for MgNi3Nb2O9 there is a magnetic ordering at temperatures below 45.5 K.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000260636200025	Publication Date	2007-09-15
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	3	Open Access
Notes	Belgium Science Policy			Approved	Most recent IF: 2.299; 2007 IF: 2.149
Call Number	UA @ lucian @ c:irua:72944			Serial	559
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Author	Chernaya, V.V.; Tsirlin, A.A.; Shpanchenko, R.V.; Antipov, E.V.; Gippius, A.A.; Morozova, E.N.; Dyakov, V.; Hadermann, J.; Kaul, E.E.; Geibel, C.
Title	Crystal structure and properties of the new vanadyl(IV)phosphates Na2MVO(PO4)2 M=Ca and Sr			Type	A1 Journal article
Year	2004	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	177	Issue		Pages	2875-2880
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000223145500033	Publication Date	2004-08-04
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	6	Open Access
Notes				Approved	Most recent IF: 2.299; 2004 IF: 1.815
Call Number	UA @ lucian @ c:irua:47317			Serial	565
Permanent link to this record



Author	Sullivan, E.; Hadermann, J.; Greaves, C.
Title	Crystallographic and magnetic characterisation of the brownmillerite Sr₂Co₂O₅			Type	A1 Journal article
Year	2011	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	184	Issue	3	Pages	649-654
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Sr2Co2O5 with the perovskite-related brownmillerite structure has been synthesised via quenching, with the orthorhombic unit cell parameters a=5.4639(3) Å, b=15.6486(8) Å and c=5.5667(3) Å based on refinement of neutron powder diffraction data collected at 4 K. Electron microscopy revealed LRLR-intralayer ordering of chain orientations, which require a doubling of the unit cell along the c-parameter, consistent with the assignment of the space group Pcmb. However, on the length scale pertinent to NPD, no long-range order is observed and the disordered space group Imma appears more appropriate. The magnetic structure corresponds to G-type order with a moment of 3.00(4) μB directed along [1 0 0].
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000288587800026	Publication Date	2011-01-27
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	19	Open Access
Notes				Approved	Most recent IF: 2.299; 2011 IF: 2.159
Call Number	UA @ lucian @ c:irua:89650			Serial	584
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Author	Retuerto, M.; Li, M.R.; Go, Y.B.; Ignatov, A.; Croft, M.; Ramanujachary, K.V.; Herber, R.H.; Nowik, I.; Hodges, J.P.; Dachraoui, W.; Hadermann, J.; Greenblatt, M.;
Title	High magnetic ordering temperature in the perovskites Sr_4-xLa_xFe₃ReO₁₂ (x=0.0, 1.0, 2.0)			Type	A1 Journal article
Year	2012	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	194	Issue		Pages	48-58
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A series of perovskites Sr4−xLaxFe3ReO12 (x=0.0, 1.0, 2.0) has been prepared by wet chemistry methods. The structure analyses by powder X-ray and neutron diffraction and electron microscopy show that these compounds adopt simple perovskite structures without cation ordering over the B sites: tetragonal (I4/mcm) for x=0.0 and 1.0 and orthorhombic (Pbmn) for x=2.0. The oxidation states of the cations in the compound with x=0.0 appear to be Fe3+/4+ and Re7+ and decrease for both with La substitution as evidenced by X-ray absorption spectroscopy. All the compounds are antiferromagnetically ordered above room temperature, as demonstrated by Mössbauer spectroscopy and the magnetic structures, which were determined by powder neutron diffraction. The substitution of Sr by La strongly affects the magnetic properties with an increase of TN up to ∼750 K.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000308896400009	Publication Date	2012-07-02
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	9	Open Access
Notes				Approved	Most recent IF: 2.299; 2012 IF: 2.040
Call Number	UA @ lucian @ c:irua:101220			Serial	1435
Permanent link to this record



Author	Hadermann, J.; Van Tendeloo, G.; Abakumov, A.M.; Rozova, M.G.; Antipov, E.V.
Title	HREM study of fluorinated Nd₂CuO₄			Type	A1 Journal article
Year	2001	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	157	Issue		Pages	56-61
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000167634500008	Publication Date	2002-09-18
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	7	Open Access
Notes				Approved	Most recent IF: 2.299; 2001 IF: 1.614
Call Number	UA @ lucian @ c:irua:36047			Serial	1510
Permanent link to this record



Author	Liu, Y.; Norén, L.; Withers, R.L.; Hadermann, J.; Van Tendeloo, G.; Garcia-Garcia, J.
Title	The metastable Ni_{7\pm x}S₆ and mixed Ni_{6\pm x}(S_1-ySe_y)₅ phases			Type	A1 Journal article
Year	2003	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	170	Issue		Pages	351-360
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000181875200019	Publication Date	2003-06-02
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	5	Open Access
Notes				Approved	Most recent IF: 2.299; 2003 IF: 1.413
Call Number	UA @ lucian @ c:irua:42054			Serial	2015
Permanent link to this record



Author	Shpanchenko, R.V.; Tsirlin, A.A.; Kondakova, E.S.; Antipov, E.V.; Bougerol, C.; Hadermann, J.; Van Tendeloo, G.; Sakurai, H.; Takayama-Muromachi, E.
Title	New germanates RCrGeO5 (R=NdEr, Y): synthesis, structure, and properties			Type	A1 Journal article
Year	2008	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	181	Issue	9	Pages	2433-2441
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The new complex germanates RCrGeO5 (R=NdEr, Y) have been synthesized and investigated by means of X-ray powder diffraction, electron microscopy, magnetic susceptibility and specific heat measurements. All the compounds are isostructural and crystallize in the orthorhombic symmetry, space group Pbam, and Z=4. The crystal structure of RCrGeO5, as refined using X-ray powder diffraction data, includes infinite chains built by edge-sharing Cr+3O6 octahedra with two alternating Cr−Cr distances. The chains are combined into a three-dimensional framework by Ge2O8 groups consisting of two edge-linked square pyramids oriented in opposite directions. The resulting framework contains pentagonal channels where rare-earth elements are located. Thus, RCrGeO5 germanates present new examples of RMn2O5-type compounds and show ordering of Cr+3 and Ge+4 cations. Electron diffraction as well as high-resolution electron microscopy confirm the structure solution. Magnetic susceptibility data for R=Nd, Sm, and Eu are qualitatively consistent with the presence of isolated 3d (antiferromagnetically coupled Cr+3 cations) and 4f (R+3) spin subsystems in the RCrGeO5 compounds. NdCrGeO5 undergoes long-range magnetic ordering at 2.6 K, while SmCrGeO5 and EuCrGeO5 do not show any phase transitions down to 2 K.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000259415800047	Publication Date	2008-06-06
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	6	Open Access
Notes				Approved	Most recent IF: 2.299; 2008 IF: 1.910
Call Number	UA @ lucian @ c:irua:72948			Serial	2314
Permanent link to this record



Author	Hadermann, J.; Abakumov, A.M.; Perkisas, T.; d' Hondt, H.; Tan, H.; Verbeeck, J.; Filonenko, V.P.; Antipov, E.V.; Van Tendeloo, G.
Title	New perovskite-based manganite Pb₂Mn₂O₅			Type	A1 Journal article
Year	2010	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	183	Issue	183	Pages	2190-2195
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A new perovskite based compound Pb2Mn2O5 has been synthesized using a high pressure high temperature technique. The structure model of Pb2Mn2O5 is proposed based on electron diffraction, high angle annular dark field scanning transmission electron microscopy and high resolution transmission electron microscopy. The compound crystallizes in an orthorhombic unit cell with parameters a=5.736(1)Å≈√2a p p p (a p the parameter of the perovskite subcell) and space group Pnma. The Pb2Mn2O5 structure consists of quasi two-dimensional perovskite blocks separated by 1/2[110] p (1̄01) p crystallographic shear planes. The blocks are connected to each other by chains of edge-sharing MnO5 distorted tetragonal pyramids. The chains of MnO5 pyramids and the MnO6 octahedra of the perovskite blocks delimit six-sided tunnels accommodating double chains of Pb atoms. The tunnels and pyramidal chains adopt two mirror-related configurations (left L and right R) and layers consisting of chains and tunnels of the same configuration alternate in the structure according to an -LRLR-sequence. The sequence is sometimes locally violated by the appearance of -LL- or -RR-fragments. A scheme is proposed with a JahnTeller distortion of the MnO6 octahedra with two long and two short bonds lying in the ac plane, along two perpendicular orientations within this plane, forming a d-type pattern.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000282139600041	Publication Date	2010-07-25
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	8	Open Access
Notes	Fwo; Bof; Esteem 026019			Approved	Most recent IF: 2.299; 2010 IF: 2.261
Call Number	UA @ lucian @ c:irua:85472UA @ admin @ c:irua:85472			Serial	2332
Permanent link to this record



Author	Abakumov, A.M.; Hadermann, J.; Tsirlin, A.A.; Tan, H.; Verbeeck, J.; Zhang, H.; Dikarev, E.V.; Shpanchenko, R.V.; Antipov, E.V.
Title	Original close-packed structure and magnetic properties of the Pb₄Mn₉O₂₀ manganite			Type	A1 Journal article
Year	2009	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	182	Issue	8	Pages	2231-2238
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The crystal structure of the Pb4Mn9O20 compound (previously known as Pb0.43MnO2.18) was solved from powder X-ray diffraction, electron diffraction, and high resolution electron microscopy data (S.G. Pnma, a=13.8888(2) Å, b=11.2665(2) Å, c=9.9867(1) Å, RI=0.016, RP=0.047). The structure is based on a 6H (cch)2 close packing of pure oxygen h-type (O16) layers alternating with mixed c-type (Pb4O12) layers. The Mn atoms occupy octahedral interstices formed by the oxygen atoms of the close-packed layers. The MnO6 octahedra share edges within the layers, whereas the octahedra in neighboring layers are linked through corner sharing. The relationship with the closely related Pb3Mn7O15 structure is discussed. Magnetization measurements reveal a peculiar magnetic behavior with a phase transition at 52 K, a small net magnetization below the transition temperature, and a tendency towards spin freezing.
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Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000269066400035	Publication Date	2009-06-12
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0022-4596;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	2.299	Times cited	5	Open Access
Notes	The authors are grateful to Christoph Geibel for the help in magnetization measurements. A.Ts. acknowledges MPI CKS for hospitality and financial support during the stay. E.D. thanks the National Science Foundation (CHE-0718900) for financial support. This work was supported by the Russian Foundation of Basic Research (RFBR Grants 07-03-00664-a, 06-03-90168-a and 07-03-00890-a). The authors acknowledge financial support from the European Union under the Framework 6 program under a contract for an Integrated Infrastructure Initiative. Reference 026019 ESTEEM.			Approved	Most recent IF: 2.299; 2009 IF: 2.340
Call Number	UA @ lucian @ c:irua:78935UA @ admin @ c:irua:78935			Serial	2529
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