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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
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Author	Novitskaya, M.; Makhnach, L.; Ivashkevich, L.; Pankov, V.; Klein, H.; Regeau, A.; David, J.; Gemmi, M.; Hadermann, J.; Strobel, P.
Title	Synthesis, crystal structure and physico-chemical properties of the new quaternary oxide Sr₅BiNi₂O_9.6			Type	A1 Journal article
Year	2011	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	184	Issue	12	Pages	3262-3268
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A new black quaternary oxide Sr5BiNi2O9.6 was synthesized by solid state reaction at 1200 °C. Its structure was solved by electron crystallography and X-ray powder refinement, yielding a tetragonal structure with space group I4/mmm, a=5.3637 (2) Å, c=17.5541(5) Å, Z=4. The structure can be described as a stacking of (Bi,Sr)O rocksalt slabs and SrNiO3−δ perovskite slabs. The initial nickel valence is close to +3.1. Thermogravimetry and high-temperature oxygen coulometry showed that this compound has variable oxygen content as a function of temperature and oxygen pressure, and ultimately decomposes when heated in low oxygen pressure above 800 °C. It is a metallic conductor with n-type conduction. Its thermoelectric power was determined and found to be −20 and −38 μV/K at 300 and 650 °C, respectively. Magnetic measurements confirm the nickel valence close to +3 and show evidence of magnetic ordering at 20 K.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000297662500021	Publication Date	2011-10-20
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	4	Open Access
Notes				Approved	Most recent IF: 2.299; 2011 IF: 2.159
Call Number	UA @ lucian @ c:irua:94016			Serial	3451
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Author	Korneychik, O.E.; Batuk, M.; Abakumov, A.M.; Hadermann, J.; Rozova, M.G.; Sheptyakov, D.V.; Pokholok, K.V.; Filimonov, D.S.; Antipov, E.V.
Title	Pb_2.85Ba_2.15Fe₄SnO₁₃ : a new member of the A_nB_nO_3n-2 anion-deficient perovskite-based homologous series			Type	A1 Journal article
Year	2011	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	184	Issue	12	Pages	3150-3157
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Pb2.85Ba2.15Fe4SnO13, a new n=5 member of the anion-deficient perovskite based AnBnO3n−2 (A=Pb, Ba, B=Fe, Sn) homologous series, was synthesized by the solid state method. The crystal structure of Pb2.85Ba2.15Fe4SnO13 was investigated using a combination of neutron powder diffraction, electron diffraction, high angle annular dark field scanning transmission electron microscopy and Mössbauer spectroscopy. It crystallizes in the Ammm space group with unit cell parameters a=5.7990(1) Å, b=4.04293(7) Å and c=26.9561(5) Å. The Pb2.85Ba2.15Fe4SnO13 structure consists of quasi two-dimensional perovskite blocks separated by 1/2[110](1̄01)p crystallographic shear (CS) planes. The corner-sharing FeO6 octahedra at the CS planes are transformed into edge-sharing FeO5 distorted tetragonal pyramids. The octahedral positions in the perovskite blocks between the CS planes are jointly taken up by Fe and Sn, with a preference of Sn towards the position at the center of the perovskite block. The chains of FeO5 pyramids and (Fe,Sn)O6 octahedra of the perovskite blocks delimit six-sided tunnels at the CS planes occupied by double chains of Pb atoms. The compound is antiferromagnetically ordered below TN=368±15 K.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000297662500003	Publication Date	2011-09-30
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	2.299	Times cited	7	Open Access
Notes				Approved	Most recent IF: 2.299; 2011 IF: 2.159
Call Number	UA @ lucian @ c:irua:94013			Serial	3550
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Author	Dixon, E.; Hadermann, J.; Hayward, M.A.
Title	The synthesis and complex anion-vacancy ordered structure of La_0.33Sr_0.67MnO_2.42			Type	A1 Journal article
Year	2011	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	184	Issue	7	Pages	1791-1799
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The low-temperature topotactic reduction of La0.33Sr0.67MnO3 with NaH results in the formation of La0.33Sr0.67MnO2.42. A combination of neutron powder and electron diffraction data show that La0.33Sr0.67MnO2.42 adopts a novel anion-vacancy ordered structure with a 6-layer OOTOOT' stacking sequence of the octahedral and tetrahedral layers (Pcmb, a=5.5804(1) Å, b=23.4104(7) Å, c=11.2441(3) Å). A significant concentration of anion vacancies at the anion site, which links neighbouring octahedral layers means that only 25% of the octahedral manganese coordination sites actually have 6-fold MnO6 coordination, the remainder being MnO5 square-based pyramidal sites. The chains of cooperatively twisted apex-linked MnO4 tetrahedra adopt an ordered -LRLR- arrangement within each tetrahedral layer. This is the first published example of a fully refined structure of this type which exhibits such intralayer ordering of the twisted tetrahedral chains. The rationale behind the contrasting structures of La0.33Sr0.67MnO2.42 and other previously reported reduced La1−xSrxMnO3−y phases is discussed.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000292718500032	Publication Date	2011-05-26
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; 2011 IF: 2.159
Call Number	UA @ lucian @ c:irua:90885			Serial	3600
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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	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
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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	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
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Author	El Shinawi, H.; Bertha, A.; Hadermann, J.; Herranz, T.; Santos, B.; Marco, J.F.; Berry, F.J.; Greaves, C.
Title	Synthesis and characterization of La_1+xSr_2-xCoMnO_7-\delta (x=0,0.2; \delta=0,1)			Type	A1 Journal article
Year	2010	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	183	Issue	6	Pages	1347-1353
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The n=2 Ruddlesden-Popper phases LaSr(2)CoMnO(7) and La(1 2)Sr(1 8)CoMnO(7) have been synthesized by a sol-gel method The O6-type phases LaSr(2)CoMnO(6) and La(1 2)Sr(1 8)CoMnO(6) were produced by reduction of the 07 phases under a hydrogen atmosphere The materials crystallize in the tetragonal I4/mmm space group with no evidence of long-range cation order in the neutron and electron diffraction data Oxygen vacancies in the reduced materials are located primarily at the common apex of the double perovskite layers giving rise to square pyramidal coordination around cobalt and manganese ions. The oxidation states Co(3+)/Mn(4+) and Co(2+)/Mn(3+) predominate in the as-prepared and reduced materials, respectively The materials are spin glasses at low temperature and the dominant magnetic interactions change from ferro- to antiferromagnetic following reduction (C) 2010 Elsevier Inc All rights reserved
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000278750100021	Publication Date	2010-04-17
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	5	Open Access
Notes				Approved	Most recent IF: 2.299; 2010 IF: 2.261
Call Number	UA @ lucian @ c:irua:99209			Serial	3417
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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.
Address
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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Author	Bharathy, M.; Gemmill, W.R.; Fox, A.H.; Darriet, J.; Smith, M.D.; Hadermann, J.; Remy, M.S.; zur Loye, H.-C.
Title	Synthesis and magnetic properties of rare earth ruthenates, Ln₅Ru₂O₁₂ (Ln=Pr, Nd, SmTb)			Type	A1 Journal article
Year	2009	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	182	Issue	5	Pages	1164-1170
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Single crystals of Ln5Ru2O12 (Ln=Pr, Nd, SmTb) were grown out of either NaOH or KOH fluxes in sealed silver tubes. The crystals of all the phases were observed to be twinned as confirmed by TEM studies. The series crystallize in the C2/m monoclinic system with lattice parameters, a=12.4049(4)12.7621(6) Å, b=5.8414(2)5.9488(3) Å, c=7.3489(2)7.6424(4) Å, β=107.425(3)107.432(2)° and Z=2. The crystal structure is isotypic with the defect/disorder model of Ln5Re2O12 (Ln = Y, Gd) and consists of one dimensional edge shared RuO6 octahedral chains separated by a two dimensional LnOx polyhedral framework. Magnetic measurements indicate paramagnetic and antiferromagnetic behavior for Ln=Nd, SmGd and Ln=Tb, respectively.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000265893700027	Publication Date	2009-02-22
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	4	Open Access
Notes				Approved	Most recent IF: 2.299; 2009 IF: 2.340
Call Number	UA @ lucian @ c:irua:77052			Serial	3433
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Author	d' Hondt, H.; Hadermann, J.; Abakumov, A.M.; Kalyuzhnaya, A.S.; Rozova, M.G.; Tsirlin, A.A.; Tan, H.; Verbeeck, J.; Antipov, E.V.; Van Tendeloo, G.
Title	Synthesis, crystal structure and magnetic properties of the Sr₂Al_0.78Mn_1.22O_5.2 anion-deficient layered perovskite			Type	A1 Journal article
Year	2009	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	182	Issue	2	Pages	356-363
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	A new layered perovskite Sr2Al0.78Mn1.22O5.2 has been synthesized by solid state reaction in a sealed evacuated silica tube. The crystal structure has been determined using electron diffraction, high-resolution electron microscopy, and high-angle annular dark field imaging and refined from X-ray powder diffraction data (space group P4/mmm, a=3.89023(5) Å, c=7.8034(1) Å, RI=0.023, RP=0.015). The structure is characterized by an alternation of MnO2 and (Al0.78Mn0.22)O1.2 layers. Oxygen atoms and vacancies, as well as the Al and Mn atoms in the (Al0.78Mn0.22)O1.2 layers are disordered. The local atomic arrangement in these layers is suggested to consist of short fragments of brownmillerite-type tetrahedral chains of corner-sharing AlO4 tetrahedra interrupted by MnO6 octahedra, at which the chain fragments rotate over 90°. This results in an averaged tetragonal symmetry. This is confirmed by the valence state of Mn measured by EELS. The relationship between the Sr2Al0.78Mn1.22O5.2 tetragonal perovskite and the parent Sr2Al1.07Mn0.93O5 brownmillerite is discussed. Magnetic susceptibility measurements indicate spin glass behavior of Sr2Al0.78Mn1.22O5.2. The lack of long-range magnetic ordering contrasts with Mn-containing brownmillerites and is likely caused by the frustration of interlayer interactions due to presence of the Mn atoms in the (Al0.78Mn0.22)O1.2 layers.
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000263124700022	Publication Date	2008-11-14
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	Iap Vi			Approved	Most recent IF: 2.299; 2009 IF: 2.340
Call Number	UA @ lucian @ c:irua:72943			Serial	3450
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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
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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	Shpanchenko, R.V.; Panin, R.V.; Hadermann, J.; Bougerol, C.; Takayama-Muromachi, E.; Antipov, E.V.
Title	Synthesis and structure investigation of the Pb₃V(PO₄)₃ eulytite			Type	A1 Journal article
Year	2005	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	178	Issue	12	Pages	3715-3721
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000234442100016	Publication Date	2005-11-03
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	17	Open Access
Notes	Rfbr; Icdd; Iap V-1			Approved	Most recent IF: 2.299; 2005 IF: 1.725
Call Number	UA @ lucian @ c:irua:55029			Serial	3441
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Author	Abakumov, A.M.; Hadermann, J.; Kalyuzhnaya, A.S.; Rozova, M.G.; Mikheev, M.G.; Van Tendeloo, G.; Antipov, E.V.
Title	Ca_6.3Mn₃Ga_4.4Al_1.3O₁₈: a novel complex oxide with 3D tetrahedral framework			Type	A1 Journal article
Year	2005	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	178	Issue	10	Pages	3137-3144
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000232418200022	Publication Date	2005-08-26
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	Iap V-1; Rfbr; Intas – Ysf			Approved	Most recent IF: 2.299; 2005 IF: 1.725
Call Number	UA @ lucian @ c:irua:55030			Serial	3520
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Author	Gillie, L.J.; Hadermann, J.; Pérez, O.; Martin, C.; Hervieu, M.; Suard, E.
Title	SrMn₃O₆: an incommensurate modulated tunnel structure			Type	A1 Journal article
Year	2004	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	177	Issue		Pages	3383-3391
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000224465500020	Publication Date	2004-07-21
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	Scootmo: Hrpn-Ct-2002-00293; Super-Gmr: Hprn-Ct-2002-0021			Approved	Most recent IF: 2.299; 2004 IF: 1.815
Call Number	UA @ lucian @ c:irua:49463			Serial	3562
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Author	Abakumov, A.M.; Rozova, M.G.; Chizhov, P.S.; Antipov, E.V.; Hadermann, J.; Van Tendeloo, G.
Title	Synthesis and crystal structure of the novel Pb5Sb2MnO11 compound			Type	A1 Journal article
Year	2004	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	177	Issue		Pages	2855-2861
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000223145500030	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	3	Open Access
Notes				Approved	Most recent IF: 2.299; 2004 IF: 1.815
Call Number	UA @ lucian @ c:irua:47316			Serial	3428
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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
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Author	Kopnin, E.M.; Belik, A.A.; Shpanchenko, R.V.; Antipov, E.V.; Izumi, F.; Takayama-Muromachi, E.; Hadermann, J.
Title	Synthesis, crystal structure, and magnetic properties of new layered hexagonal perovskite Ba₈Ta₄Ru_8/3Co_2/3O₂₄			Type	A1 Journal article
Year	2004	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	177	Issue		Pages	3499-3504
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000224465500035	Publication Date	2004-08-13
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	1	Open Access
Notes	reprint; IUAP V-1			Approved	Most recent IF: 2.299; 2004 IF: 1.815
Call Number	UA @ lucian @ c:irua:49462			Serial	3448
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Author	Alekseeva, A.M.; Abakumov, A.M.; Rozova, M.G.; Antipov, E.V.; Hadermann, J.
Title	Synthesis and crystal structure of the Sr₂MnGa(O,F)₆ oxyfluorides			Type	A1 Journal article
Year	2004	Publication	Journal of solid state chemistry	Abbreviated Journal	J Solid State Chem
Volume	177	Issue		Pages	731-738
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract
Address
Corporate Author				Thesis
Publisher		Place of Publication	London	Editor
Language		Wos	000220513000016	Publication Date	2003-10-28
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	23	Open Access
Notes				Approved	Most recent IF: 2.299; 2004 IF: 1.815
Call Number	UA @ lucian @ c:irua:43874			Serial	3431
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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	Zhang, F.; Vanmeensel, K.; Inokoshi, M.; Batuk, M.; Hadermann, J.; Van Meerbeek, B.; Naert, I.; Vleugels, J.
Title	Critical influence of alumina content on the low temperature degradation of 2-3 mol% yttria-stabilized TZP for dental restorations			Type	A1 Journal article
Year	2015	Publication	Journal of the European Ceramic Society	Abbreviated Journal	J Eur Ceram Soc
Volume	35	Issue	35	Pages	741-750
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The influence of 0.25, 2 and 5 wt.% alumina addition on the mechanical properties and low temperature degradation (LTD) of 3, 2.5 and 2 mol% yttria-stabilized TZP ceramics was investigated. The amount of alumina addition was observed to have a crucial impact on the degradation of Y-TZP ceramics. Independent on the yttria stabilizer content, 0.25 wt.% alumina had a higher degradation retarding effect to Y-TZP ceramics than 2 and 5 wt.% of alumina addition, which had a comparable effect. The apparent activation energy for the degradation process was increased by adding alumina, but it was the same for 0.255 wt.% alumina doped 3Y-TZP ceramics. For Y-TZPs containing a small amount of alumina addition, only the segregated Al3+ at the grain boundaries of the zirconia grains was effective to retard the degradation of Y-TZPs. The secondary phase Al2O3 grains increased the degradation kinetics, which might be attributed to the residual stresses.
Address
Corporate Author				Thesis
Publisher		Place of Publication	Barking	Editor
Language		Wos	000345201700032	Publication Date	2014-09-27
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0955-2219;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	3.411	Times cited	37	Open Access
Notes	Fwo G043110n			Approved	Most recent IF: 3.411; 2015 IF: 2.947
Call Number	c:irua:121328			Serial	544
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Author	Zhang, F.; Vanmeensel, K.; Inokoshi, M.; Batuk, M.; Hadermann, J.; Van Meerbeek, B.; Naert, I.; Vleugels, J.
Title	3Y-TZP ceramics with improved hydrothermal degradation resistance and fracture toughness			Type	A1 Journal article
Year	2014	Publication	Journal of the European Ceramic Society	Abbreviated Journal	J Eur Ceram Soc
Volume	34	Issue	10	Pages	2453-2463
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Different factors such as the way of incorporating the Y2O3 stabilizer, alumina addition and sintering temperature were assessed with the goal to improve the low temperature degradation (LTD) resistance of 3Y-TZP without compromising on the mechanical properties. The degradation of hydrothermally treated specimens was studied by X-ray diffraction, micro-Raman spectroscopy and scanning electron microscopy. Decreasing the sintering temperature decreased the LTD susceptibility of 3Y-TZPs but did not allow to obtain a LTD resistant 3Y-TZP with optimized mechanical properties. Alumina addition along with the use of Y2O3 stabilizer coated starting powder allowed to combine both an excellent toughness and LTD resistance, as compared to alumina-free and stabilizer co-precipitated powder based equivalents. Transmission electron microscopy revealed that the improved LTD resistance could be attributed to the segregation of Al3+ at the grain boundary and the heterogeneously distributed Y3+ stabilizer.
Address
Corporate Author				Thesis
Publisher		Place of Publication	Barking	Editor
Language		Wos	000336352500033	Publication Date	2014-03-07
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0955-2219;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	3.411	Times cited	48	Open Access
Notes	Fwo G.0431.10n			Approved	Most recent IF: 3.411; 2014 IF: 2.947
Call Number	UA @ lucian @ c:irua:117065 c:irua:117065			Serial	11
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Author	Deyneko, D.V.; Morozov, V.A.; Hadermann, J.; Savon, A.E.; Spassky, D.A.; Stefanovich, S.Y.; Belik, A.A.; Lazoryak, B.I.
Title	A novel red Ca_8.5Pb_0.5Eu(PO₄)₇ phosphor for light emitting diodes application			Type	A1 Journal article
Year	2015	Publication	Journal of alloys and compounds	Abbreviated Journal	J Alloy Compd
Volume	647	Issue	647	Pages	965-972
Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Abstract	Ca9-xPbxEu(PO4)(7) (0 <= x <= 1) solid solutions with a whitlockite-type (or beta-Ca-3(PO4)(2)-type) structure (sp.gr. R3c) were prepared by a standard solid-state method in air. Their luminescent properties under near-ultraviolet (n-UV) light were investigated. Excitation spectra of Ca9-xPbxEu(PO4)(7) showed the strongest absorption at about 395 nm, which matches well with commercially available n-UV-emitting GaN-based LED chips. Emission spectra indicated an intense red emission due to the D-5(0) -> F-7(2) transition of Eu3+, with a maximum in the intensity for Ca8.5Pb0.5Eu(PO4)(7). The emission intensity of Ca8.5Pb0.5Eu(PO4)(7) was about 1.8 times higher than that of a Ca9Eu(PO4)(7) phosphor. We suggest that the introduction of Pb2+ is an efficient approach to enhance luminescence properties of such phosphors. We clarified the influence of the Ca2+/Pb2+ substitution on intensities of three bands for the D-5(0) -> F-7(0) transition in excitation spectra of Ca9-xPbxEu(PO4)(7). In addition, we found a reversible first-order phase transition from R3c to R (3) over barc symmetry by second-harmonic generation in the range from 753 K (x = 1) to 846 K (x = 0). (C) 2015 Elsevier B.V. All rights reserved.
Address
Corporate Author				Thesis
Publisher		Place of Publication	Amsterdam	Editor
Language		Wos	000361156400135	Publication Date	2015-06-18
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0925-8388	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	3.133	Times cited	18	Open Access
Notes				Approved	Most recent IF: 3.133; 2015 IF: 2.999
Call Number	UA @ lucian @ c:irua:128720			Serial	4215
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Author	Zhang, F.; Inokoshi, M.; Batuk, M.; Hadermann, J.; Naert, I.; Van Meerbeek, B.; Vleugels, J.
Title	Strength, toughness and aging stability of highly-translucent Y-TZP ceramics for dental restorations			Type	A1 Journal article
Year	2016	Publication	Dental materials	Abbreviated Journal	Dent Mater
Volume	32	Issue	12	Pages	E327-E337
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Objective. The aim was to evaluate the optical properties, mechanical properties and aging stability of yttria-stabilized zirconia with different compositions, highlighting the influence of the alumina addition, Y2O3 content and La2O3 doping on the translucency. Methods. Five different Y-TZP zirconia powders (3 commercially available and 2 experimentally modified) were sintered under the same conditions and characterized by X-ray diffraction with Rietveld analysis and scanning electron microscopy (SEM). Translucency (n = 6/group) was measured with a color meter, allowing to calculate the translucency parameter (TP) and the contrast ratio (CR). Mechanical properties were appraised with four-point bending strength (n = 10), single edge V-notched beam (SEVNB) fracture toughness (n = 8) and Vickers hardness (n = 10). The aging stability was evaluated by measuring the tetragonal to monoclinic transformation (n = 3) after accelerated hydrothermal aging in steam at 134 degrees C, and the transformation curves were fitted by the Mehl-Avrami-Johnson (MAJ) equation. Data were analyzed by one-way ANOVA, followed by Tukey's HSD test (alpha = 0.05). Results. Lowering the alumina content below 0.25 wt.% avoided the formation of alumina particles and therefore increased the translucency of 3Y-TZP ceramics, but the hydrothermal aging stability was reduced. A higher yttria content (5 mol%) introduced about 50% cubic zirconia phase and gave rise to the most translucent and aging-resistant Y-TZP ceramics, but the fracture toughness and strength were considerably sacrificed. 0.2 mol% La2O3 doping of 3Y-TZP tailored the grain boundary chemistry and significantly improved the aging resistance and translucency. Although the translucency improvement by La2O3 doping was less effective than for introducing a substantial amount of cubic zirconia, this strategy was able to maintain the mechanical properties of typical 3Y-TZP ceramics. Significance. Three different approaches were compared to improve the translucency of 3YTZP ceramics. (C) 2016 The Academy of Dental Materials. Published by Elsevier Ltd. All rights reserved.
Address
Corporate Author				Thesis
Publisher		Place of Publication	Copenhagen	Editor
Language		Wos	000389516400003	Publication Date
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0109-5641	ISBN		Additional Links	UA library record; WoS full record
Impact Factor	4.07	Times cited	47	Open Access
Notes				Approved	Most recent IF: 4.07
Call Number	UA @ lucian @ c:irua:140246			Serial	4447
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Author	Tunca, B.; Lapauw, T.; Callaert, C.; Hadermann, J.; Delville, R.; Caspi, E.'ad N.; Dahlqvist, M.; Rosen, J.; Marshal, A.; Pradeep, K.G.; Schneider, J.M.; Vleugels, J.; Lambrinou, K.
Title	Compatibility of Zr₂AlC MAX phase-based ceramics with oxygen-poor, static liquid lead-bismuth eutectic			Type	A1 Journal article
Year	2020	Publication	Corrosion Science	Abbreviated Journal	Corros Sci
Volume	171	Issue		Pages	108704-108719
Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
Abstract	This work investigates the compatibility of Zr2AlC MAX phase-based ceramics with liquid LBE, and proposes a mechanism to explain the observed local Zr2AlC/LBE interaction. The ceramics were exposed to oxygen-poor (C-O <= 2.2 x 10(-10) mass%), static liquid LBE at 500 degrees C for 1000 h. A new Zr-2(Al,Bi,Pb)C MAX phase solid solution formed in-situ in the LBE-affected Zr2AlC grains. Out-of-plane ordering was favorable in the new solid solution, whereby A-layers with high and low-Bi/Pb contents alternated in the crystal structure, in agreement with first-principles calculations. Bulk Zr-2(Al,Bi,Pb)C was synthesized by reactive hot pressing to study the crystal structure of the solid solution by neutron diffraction.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000537624600005	Publication Date	2020-04-27
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0010-938x	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	8.3	Times cited	3	Open Access	Not_Open_Access
Notes	; B.T. acknowledges the financial support of the SCK CEN Academy for Nuclear Science and Technology (Belgium). This research was partly funded by the European Atomic Energy Community's (Euratom) Seventh Framework Programme FP7/ 2007-2013 under Grant Agreement No. 604862 (FP7 MatISSE), the MYRRHA project (SCK CEN, Belgium), as well as by the Euratom research and training programme 2014-2018 under Grant Agreement No. 740415 (H2020 IL TROVATORE). The performed research falls within the framework of the EERA (European Energy Research Alliance) Joint Programme on Nuclear Materials (JPNM). The authors gratefully acknowledge the Hercules Foundation for Project AKUL/1319 (CombiS(T)EM)) and the Knut and Alice Wallenberg (KAW) foundation. The calculations were carried out using supercomputer resources provided by the Swedish National Infrastructure for Computing (SNIC) at the High Performance Computing Center North (HPC2N) and the PDC Center for High Performance Computing. E.N.C. thanks Offir Ozeri for his help in NPD data acquiring. ;			Approved	Most recent IF: 8.3; 2020 IF: 5.245
Call Number	UA @ admin @ c:irua:170157			Serial	6475
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Author	Volykhov, A.A.; Frolov, A.S.; Neudachina, V.S.; Vladimirova, N.V.; Gerber, E.; Callaert, C.; Hadermann, J.; Khmelevsky, N.O.; Knop-Gericke, A.; Sanchez-Barriga, J.; Yashina, L.V.
Title	Impact of ordering on the reactivity of mixed crystals of topological insulators with anion substitution: Bi₂SeTe₂ and Sb₂SeTe₂			Type	A1 Journal article
Year	2021	Publication	Applied Surface Science	Abbreviated Journal	Appl Surf Sci
Volume	541	Issue		Pages	148490
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	Three-dimensional topological insulators are exotic materials with unique properties. Tetradymite type binary chalcogenides of bismuth and antimony, as well as their mixed crystals, belong to prototypical TIs. Potential device applications of these materials require in-depth knowledge of their stability in the ambient atmosphere and other media maintained during their processing. Here we investigated the reactivity of mixed crystals with anion substitution, Bi-2(Se1-xTex)(3) and Sb2(Se1-xTex)(3), towards molecular oxygen using both in situ and ex situ X-ray photoelectron spectroscopy. The results indicate that, in contrast to cation substitution, partial substitution of tellurium by selenium atoms leads to anomalously high surface reactivity, which even exceeds that of the most reactive binary constituent. We attribute this effect to anion ordering that essentially modifies the bond geometry, especially the respective bond angles as modeled by DFT.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000608492900003	Publication Date	2020-11-18
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	0169-4332	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	3.387	Times cited		Open Access	Not_Open_Access
Notes				Approved	Most recent IF: 3.387
Call Number	UA @ admin @ c:irua:176067			Serial	6728
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Author	Kalyuzhnaya, A.S.; Abakumov, A.M.; Rozova, M.G.; d' Hondt, H.; Hadermann, J.; Antipov, E.V.
Title	Synthesis and crystal structure of the new complex oxide Ca₇Mn_2.14Ga_5.86O_17.93			Type	A1 Journal article
Year	2010	Publication	Russian chemical bulletin	Abbreviated Journal	Russ Chem B+
Volume	59	Issue	4	Pages	706-711
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	The complex oxide Ca7Mn2.14Ga5.86O17.93 was synthesized by the solid-state reaction in a sealed evacuated quartz tube at 1000 °C. Its crystal structure was determined by electron diffraction and X-ray powder diffraction. The structure can be represented as a tetrahedral framework, viz., the polyanion [(Mn0.285Ga0.715)15O29.86]19- stabilized by the incorporated cation [Ca14GaO6]19+. The polycation consists of the GaO6 octahedra surrounded by the Ca atoms, which are arranged to form a cube capped at all places. The tetrahedral framework is partially disordered due to the presence of tetrahedra with two possible orientations in the positions (0, 0, 0) and (x, x, x) with x ≈ 0.15 and 0.17. The relationship between the Ca7Mn2.14Ga5.86O17.93 structures and related ordered phases with the symmetry F23, as well as the influence of the oxygen content on the ordering in the tetrahedral framework, are discussed.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000283302000006	Publication Date	2010-10-20
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1066-5285;1573-9171;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	0.529	Times cited	1	Open Access
Notes				Approved	Most recent IF: 0.529; 2010 IF: 0.629
Call Number	UA @ lucian @ c:irua:85675			Serial	3427
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Author	Shpanchenko, R.V.; Tsirlin, A.A.; Hadermann, J.; Antipov, E.V.
Title	Synthesis and crystal structure of new titanyl phosphate Sr₂TiO(PO₄)₂			Type	A1 Journal article
Year	2008	Publication	Russian chemical bulletin	Abbreviated Journal	Russ Chem B+
Volume	57	Issue	3	Pages	552-556
Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
Abstract	New strontium titanyl phosphate Sr2TiO(PO4)2 (1) was synthesized and characterized by X-ray powder diffraction, electron diffraction, high-resolution electron microscopy, and band structure calculations. Titanyl phosphate 1 is isostructural with vanadyl phosphate Sr2VO(PO4)2 and has a layered structure. The titanium atoms are shifted from the centers of the TiO6 octahedra and form short (1.74 Å) titanyl bonds. The structure of 1 is an unusual example of the disordered orientation of the chains formed by TiO6 octahedra in complex titanium phosphates.
Address
Corporate Author				Thesis
Publisher		Place of Publication		Editor
Language		Wos	000263566900015	Publication Date	2009-03-06
Series Editor		Series Title		Abbreviated Series Title
Series Volume		Series Issue		Edition
ISSN	1066-5285;1573-9171;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
Impact Factor	0.529	Times cited	2	Open Access
Notes				Approved	Most recent IF: 0.529; 2008 IF: 0.469
Call Number	UA @ lucian @ c:irua:73712			Serial	3423
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