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	Author	Godefroo, S.; Hayne, M.; Jivanescu, M.; Stesmans, A.; Zacharias, M.; Lebedev, O.I.; Van Tendeloo, G.; Moshchalkov, V.V.
	Title	Classification and control of the origin of photoluminescence from Si nanocrystals			Type	A1 Journal article
	Year	2008	Publication	Nature nanotechnology	Abbreviated Journal	Nat Nanotechnol
	Volume	3	Issue	3	Pages	174-178
	Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
	Abstract	Silicon dominates the electronics industry, but its poor optical properties mean that III-V compound semiconductors are preferred for photonics applications. Photoluminescence at visible wavelengths was observed from porous Si at room temperature in 1990, but the origin of these photons (do they arise from highly localized defect states or quantum confinement effects?) has been the subject of intense debate ever since. Attention has subsequently shifted from porous Si to Si nanocrystals, but the same fundamental question about the origin of the photoluminescence has remained. Here we show, based on measurements in high magnetic fields, that defects are the dominant source of light from Si nanocrystals. Moreover, we show that it is possible to control the origin of the photoluminescence in a single sample: passivation with hydrogen removes the defects, resulting in photoluminescence from quantum-confined states, but subsequent ultraviolet illumination reintroduces the defects, making them the origin of the light again.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Wos	000254743600017	Publication Date	2008-03-02
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1748-3387;1748-3395;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	38.986	Times cited	426	Open Access
	Notes	Fwo			Approved	Most recent IF: 38.986; 2008 IF: 20.571
	Call Number	UA @ lucian @ c:irua:102630			Serial	373
Permanent link to this record



	Author	Afanasov, I.M.; Lebedev, O.I.; Kolozhvary, B.A.; Smirnov, A.V.,; Van Tendeloo, G.
	Title	Nickel/carbon composite materials based on expanded graphite			Type	A1 Journal article
	Year	2011	Publication	New carbon materials	Abbreviated Journal
	Volume	26	Issue	5	Pages	335-340
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	Monolithic nickel/carbon (Ni/C) composites were prepared from coal tar pitch-impregnated compressed expanded graphite pre-decorated with NiO particles (EGNiO) by pyrolysis at 550 °C and subsequent steam activation at 800 °C. The microstructural arrangement of the Ni-comprising nanoparticles in the composites was investigated using transmission electron microscopy. The specific surface area and porosity of the composites were analyzed by nitrogen adsorption. The catalytic activity of the composites was compared with the material obtained by the conventional H2 treatment of EGNiO using hydrocracking of 2,2,3-trimethylpentane as a model reaction.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Wos	000296926500003	Publication Date	2011-11-12
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1872-5805;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor		Times cited	7	Open Access
	Notes	Iap			Approved	Most recent IF: NA
	Call Number	UA @ lucian @ c:irua:93633			Serial	2340
Permanent link to this record



	Author	Suvorov, A.V.; Lebedev, O.I.; Suvorova, A.A.; van Landuyt, J.; Usov, I.O.
	Title	Defect characterization in high temperature implanted 6H-SiC using TEM			Type	A1 Journal article
	Year	1997	Publication	Nuclear instruments and methods in physics research: B	Abbreviated Journal	Nucl Instrum Meth B
	Volume	127/128	Issue		Pages	347-349
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Wos	A1997XG60500078	Publication Date	2002-07-25
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0168-583X;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.109	Times cited	17	Open Access
	Notes				Approved	Most recent IF: 1.109; 1997 IF: 1.016
	Call Number	UA @ lucian @ c:irua:21411			Serial	613
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	Author	Kalitzova, M.; Peeva, A.; Ignatova, V.; Lebedev, O.I.; Zollo, G.; Vitali, G.
	Title	Ion beam synthesis of Te and Bi nanoclusters in silicon: the effect of post-implantation high frequency electromagnetic field			Type	A1 Journal article
	Year	2006	Publication	Nuclear instruments and methods in physics research: B: beam interactions with materials and atoms	Abbreviated Journal	Nucl Instrum Meth B
	Volume	242	Issue		Pages	209-213
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	000236225200056	Publication Date	2005-09-15
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0168-583X;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.109	Times cited	1	Open Access
	Notes				Approved	Most recent IF: 1.109; 2006 IF: 0.946
	Call Number	UA @ lucian @ c:irua:58051			Serial	1741
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	Author	Abakumov, A.M.; Lebedev, O.I.; Nistor, L.; Van Tendeloo, G.; Amelinckx, S.
	Title	The ferroelectric phase transition in tridymite type BaAl₂O₄ studied by electron microscopy			Type	A1 Journal article
	Year	2000	Publication	Phase transitions	Abbreviated Journal	Phase Transit
	Volume	71	Issue		Pages	143-160
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	New York	Editor
	Language		Wos	000088795800005	Publication Date	2007-07-08
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0141-1594;1029-0338;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.06	Times cited	21	Open Access
	Notes				Approved	Most recent IF: 1.06; 2000 IF: NA
	Call Number	UA @ lucian @ c:irua:54724			Serial	1181
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	Author	Lebedev, O.I.; Verbeeck, J.; Van Tendeloo, G.; Hayashi, N.; Terashima, T.; Takano, M.
	Title	Structure and microstructure of epitaxial Sr_nFe_nO_3n-1 films			Type	A1 Journal article
	Year	2004	Publication	Philosophical magazine	Abbreviated Journal	Philos Mag
	Volume	84	Issue	36	Pages	3825-3841
	Keywords	A1 Journal article; Engineering sciences. Technology; Electron microscopy for materials research (EMAT)
	Abstract	Thin films of SrFeO3-x (0 less than or equal to x less than or equal to 0.5) (SFO) grown on a (LaAlO3)(0.3) (SrAl0.5Ta0.5O3)(0.7) (LSAT) substrate by Pulsed laser deposition have been structurally investigated by electron diffraction and high resolution transmission electron microscopy for different post-deposition oxygen treatments. During the deposition and post-growth oxidation, the oxygen-reduced SFO films accept extra oxygen along the tetrahedral layers to minimize the elastic strain energy. The oxidation process stops at a concentration SFO2.875 and/or SFO2.75 because a zero misfit with the LSAT substrate is reached. A possible growth mechanism and phase transition mechanism are suggested. The non-oxidized films exhibit twin boundaries having a local perovskite-type structure with a nominal composition close to SFO3.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Wos	000225854700001	Publication Date	2005-01-28
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1478-6435;1478-6443;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.505	Times cited	4	Open Access
	Notes	reprint			Approved	Most recent IF: 1.505; 2004 IF: 1.167
	Call Number	UA @ lucian @ c:irua:54755			Serial	3287
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	Author	Dubourdieu, C.; Huot, G.; Gelard, I.; Roussel, H.; Lebedev, O.I.; Van Tendeloo, G.
	Title	Thin films and superlattices of multiferroic hexagonal rare earth manganites			Type	A1 Journal article
	Year	2007	Publication	Philosophical magazine letters	Abbreviated Journal	Phil Mag Lett
	Volume	87	Issue	3/4	Pages	203-210
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	London	Editor
	Language		Wos	000246263700008	Publication Date	2007-03-30
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0950-0839;1362-3036;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	0.941	Times cited	17	Open Access
	Notes				Approved	Most recent IF: 0.941; 2007 IF: 1.878
	Call Number	UA @ lucian @ c:irua:64721			Serial	3640
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	Author	Lebedev, O.I.; Van Tendeloo, G.; Amelinckx, S.; Ju, H.L.; Krishnan, K.M.
	Title	High-resolution electron microscopy study of strained epitaxial La_0.7Sr_0.3MnO₃ thin films			Type	A1 Journal article
	Year	2000	Publication	Philosophical magazine: A: physics of condensed matter: defects and mechanical properties	Abbreviated Journal	Philos Mag A
	Volume	80	Issue	3	Pages	673-691
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	London	Editor
	Language		Wos	000085873500011	Publication Date	2007-07-08
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0141-8610;1460-6992;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor		Times cited	52	Open Access
	Notes	IUAP 4-10; reprint			Approved	Most recent IF: NA
	Call Number	UA @ lucian @ c:irua:54751			Serial	1456
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	Author	Lebedev, O.I.; Van Tendeloo, G.; Amelinckx, S.; Razavi, F.; Habermeier, H.-U.
	Title	Periodic microtwinning as a possible mechanism for the accommodation of the epitaxial film-substrate mismatch in the La_1-xSr_xMnO₃/SrTiO₃ system			Type	A1 Journal article
	Year	2001	Publication	Philosophical magazine: A: physics of condensed matter: defects and mechanical properties	Abbreviated Journal	Philos Mag A
	Volume	81	Issue	4	Pages	797-824
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	London	Editor
	Language		Wos		Publication Date	0000-00-00
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0141-8610; 1364-2804	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor		Times cited		Open Access
	Notes				Approved	Most recent IF: NA
	Call Number	UA @ lucian @ c:irua:54752			Serial	2572
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	Author	Lebedev, O.I.; Verbeeck, J.; Van Tendeloo, G.; Amelinckx, S.; Ravazi, F.S.; Habermeier, H.-U.
	Title	Structure and microstructure of La_1-xSr_xMnO₃ (x=0.16) films grown on a SrTiO₃(110) substrate			Type	A1 Journal article
	Year	2001	Publication	Philosophical magazine: A: physics of condensed matter: defects and mechanical properties	Abbreviated Journal	Philos Mag A
	Volume	81	Issue	12	Pages	2865-2884
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	London	Editor
	Language		Wos	000172348000008	Publication Date	2007-07-08
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0141-8610;1460-6992;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	2.136	Times cited	12	Open Access
	Notes				Approved	Most recent IF: NA
	Call Number	UA @ lucian @ c:irua:57132			Serial	3290
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	Author	Lebedev, O.I.; Van Tendeloo, G.; Abakumov, A.M.; Amelinckx, S.; Leibold, B.; Habermeier, H.-U.
	Title	A study of the domain structure of epitaxial (La-Ca)MnO₃ films by high-resolution transmission electron microscopy			Type	A1 Journal article
	Year	1999	Publication	Philosophical magazine: A: physics of condensed matter: defects and mechanical properties	Abbreviated Journal	Philos Mag A
	Volume	79	Issue		Pages	1461-1478
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	London	Editor
	Language		Wos	000080687900013	Publication Date	2007-07-08
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0141-8610;1460-6992;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor		Times cited	27	Open Access
	Notes				Approved	Most recent IF: NA
	Call Number	UA @ lucian @ c:irua:29713			Serial	3335
Permanent link to this record



	Author	Antipov, E.V.; Abakumov, A.M.; Alekseeva, A.M.; Rozova, M.G.; Hadermann, J.; Lebedev, O.I.; Van Tendeloo, G.
	Title	Oxygen and fluorine doping in Sr₂MnGaO₅ brownmillerite			Type	A1 Journal article
	Year	2004	Publication	Physica status solidi: A: applied research	Abbreviated Journal	Phys Status Solidi A
	Volume	201	Issue	7	Pages	1403-1409
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Berlin	Editor
	Language		Wos	000221836300008	Publication Date	2004-04-21
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0031-8965;1521-396X;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor		Times cited	9	Open Access
	Notes				Approved	Most recent IF: NA
	Call Number	UA @ lucian @ c:irua:49464			Serial	2544
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	Author	Habermeier, H.U.; Razavi, F.; Lebedev, O.; Gross, G.M.; Praus, R.; Zhang, P.X.
	Title	Correlation of microstructure and magnetotransport properties of epitaxially grown La-Ca-Mn-O₃ thin films			Type	A1 Journal article
	Year	1999	Publication	Physica status solidi: B: basic research T2 – International Conference on Solid State Spectroscopy – (ICSSS), SEP 05-07, 1999, SCHWABISCH-GMUND, GERMANY	Abbreviated Journal	Phys Status Solidi B
	Volume	215	Issue	1	Pages	679-683
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	We have investigated epitaxially grown single-crystalline Ca-doped LaMnO3 thin films using the pulsed laser deposition technique in a case study aimed to explore the possibilities buried in epitaxial stress tailoring in order to control the transport properties of CMR materials beyond the limits set by equilibrium thermodynamics. Depending on the film thickness there is an abrupt transition from pseudomorphic to epitaxial granular growth observable which is related to the epitaxial strain of the films. This is associated with microscopic stress relaxation and leads to well controllable modifications of the atomic arrangements of the Mn-O sublattice in the films. Due to the interrelation of double exchange, spin-, charge- and orbital ordering and the Jahn-Teller effect mediated coupling of the electronic system to the crystal lattice, the magnetotransport properties of the firms can be modified in a controllable way.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Berlin	Editor
	Language		Wos	000082487800110	Publication Date	2002-09-10
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0370-1972;1521-3951;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.674	Times cited	3	Open Access
	Notes				Approved	Most recent IF: 1.674; 1999 IF: 0.978
	Call Number	UA @ lucian @ c:irua:103489			Serial	527
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	Author	Bougrioua, Z.; Farvacque, J.-L.; Moerman, I.; Demeester, P.; Harris, J.J.; Lee, K.; Van Tendeloo, G.; Lebedev, O.; Trush, E.J.
	Title	Mobility collapse in undoped and Si-doped GaN grown by LP-MOVPE			Type	A1 Journal article
	Year	1999	Publication	Physica status solidi: B: basic research	Abbreviated Journal	Phys Status Solidi B
	Volume	216	Issue		Pages	571-576
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Berlin	Editor
	Language		Wos	000084193900110	Publication Date	2002-09-10
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0370-1972;1521-3951;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.674	Times cited	13	Open Access
	Notes				Approved	Most recent IF: 1.674; 1999 IF: 0.978
	Call Number	UA @ lucian @ c:irua:29724			Serial	2095
Permanent link to this record



	Author	Farvacque, J.L.; Bougrioua, Z.; Moerman, I.; Van Tendeloo, G.; Lebedev, O.
	Title	Role of the defect microstructure on the electrical transport properties in undoped and Si-doped GaN grown by LP-MOVPE			Type	A1 Journal article
	Year	1999	Publication	Physica: B : condensed matter T2 – 20th International Conference on Defects in Semiconductors (ICDS-20), JUL 26-30, 1999, BERKELEY, CA	Abbreviated Journal	Physica B
	Volume	273-4	Issue		Pages	140-143
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	Experimental results show that the room-temperature carrier mobility in bulk layers of undoped or Si-doped GaN grown by LP-MOVPE on sapphire substrate shows a sudden increase as soon as the carrier density exceeds a critical value of about 10(18) cm(-3). We show that such a behavior can be theoretically reproduced by assuming that the columnar structure i.e. the dislocation microstructure is responsible for internal electronic barriers. (C) 1999 Elsevier Science B.V. All rights reserved.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	000084452200031	Publication Date	2002-07-26
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4526;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.386	Times cited	5	Open Access
	Notes				Approved	Most recent IF: 1.386; 1999 IF: 0.725
	Call Number	UA @ lucian @ c:irua:102892			Serial	2925
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	Author	de Gryse, O.; Clauws, P.; Lebedev, O.; van Landuyt, J.; Vanhellemont, J.; Claeys, C.; Simoen, E.
	Title	Chemical and structural characterization of oxygen precipitates in silicon by infrared spectroscopy and TEM			Type	A1 Journal article
	Year	2001	Publication	Physica: B : condensed matter T2 – 21st International Conference on Defects in Semiconductors, JUL 16-20, 2001, GIESSEN, GERMANY	Abbreviated Journal	Physica B
	Volume	308	Issue		Pages	294-297
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	Infrared absorption spectra of polyhedral and platelet oxygen precipitates are analyzed using a modified Day-Thorpe approach (J. Phys.: Condens. Matter 11 (1999) 2551). The aspect ratio has been determined by TEM measurements. The reduced spectral function and the stoichiometry are extracted from the absorption spectra and the concentration of precipitated interstitial oxygen. One set of spectra reveal a Frohlich frequency around 1100 cm(-1) and another around 1110-1120 cm(-1). It is shown that the shift in the Frohlich frequency is not due to a different stoichiometry, but due to the detailed structure in the reduced spectral function. The oxygen precipitates consist of SiO. with gammaapproximate to1.1-1.2+/-0.1. (C) 2001 Elsevier Science B.V. All rights reserved.
	Address
	Corporate Author				Thesis
	Publisher	Elsevier science bv	Place of Publication	Amsterdam	Editor
	Language		Wos	000173660100073	Publication Date	2002-10-15
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4526;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.386	Times cited	3	Open Access
	Notes				Approved	Most recent IF: 1.386; 2001 IF: 0.663
	Call Number	UA @ lucian @ c:irua:103389			Serial	345
Permanent link to this record



	Author	de Gryse, O.; Vanhellemont, J.; Clauws, P.; Lebedev, O.; van Landuyt, J.; Simoen, E.; Claeys, C.
	Title	A novel approach to analyse FTIR spectra of precipitates in boron-doped silicon			Type	A1 Journal article
	Year	2003	Publication	Physica: B : condensed matter T2 – 22nd International Conference on Defects in Semiconductors (ICDS-22), JUL 28-AUG 01, 2003, UNIV AARHUS, AARHUS, DENMARK	Abbreviated Journal	Physica B
	Volume	340	Issue		Pages	1013-1017
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	Infrared absorption spectra of composite precipitates are analysed with a modified Day-Thorpe algorithm, assuming a precipitated phase consisting of a mixture of two components with known optical properties. Additional constraints are introduced when solving the model equations by using a priori knowledge making the algorithm more reliable. It is shown that this novel approach allows determining both morphology and composition of precipitates. The method is applied to characterise oxide precipitates in boron-doped silicon. The results indicate that for the resistivity range above 60 mOmegacm, the precipitated phase is most probably SiO1.17+/-0.14, while for resistivities below 20 mOmega cm, precipitates consist of a SiO2/B2O3 composite with a large volume fraction of B(2)0(3) (up to 40% for 8 mOmegacm material). (C) 2003 Elsevier B.V. All rights reserved.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	000188300200213	Publication Date	2003-11-24
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4526;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.386	Times cited	4	Open Access
	Notes				Approved	Most recent IF: 1.386; 2003 IF: 0.908
	Call Number	UA @ lucian @ c:irua:103784			Serial	25
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	Author	Sudheendra, L.; Moshnyaga, V.; Lebedev, O.I.; Gehrke, K.; Belenciuc, A.; Shapoval, O.; Van Tendeloo, G.; Samwer, K.
	Title	A-site ordering and stripe phases in manganite films			Type	A1 Journal article
	Year	2008	Publication	Physica: B : condensed matter T2 – International Conference on Strongly Correlated Electron Systems (SCES, 2007), MAY 13-18, 2007, Houston, TX	Abbreviated Journal	Physica B
	Volume	403	Issue	5-9	Pages	1645-1646
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	Insulating and metallic stripes above and below the Curie temperature, T-C, respectively, were observed by a high-resolution scanning tunneling microscopy (STM) and/or spectroscopy (STS) in A-site ordered and macroscopically strain free epitaxial La0.75Ca0.25MnO3 film grown on MgO substrate. The “insulating” stripes were found to be incommensurable to the lattice and aligned along (110) direction. Metallic stripes were commensurable with periodicity 2a(p)similar to 0.8 nm and aligned parallel to the crystallographic a/b-axis. Formation of these stripes involves competing charge, orbital, and lattice orders and is an outcome of an overlapping of electron wave functions mediated by the local lattice-strain distribution, existed even in A-site ordered film due to the difference in cation radii of La and Ca. (C) 2007 Elsevier B.V. All rights reserved.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	000254689900330	Publication Date	2007-11-06
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4526;	ISBN		Additional Links	UA library record; WoS full record
	Impact Factor	1.386	Times cited		Open Access
	Notes				Approved	Most recent IF: 1.386; 2008 IF: 0.822
	Call Number	UA @ lucian @ c:irua:104031			Serial	26
Permanent link to this record



	Author	Antipov, E.V.; Putilin, S.N.; Shpanchenko, R.V.; Alyoshin, V.A.; Rozova, M.G.; Abakumov, A.M.; Mikhailova, D.A.; Balagurov, A.M.; Lebedev, O.; Van Tendeloo, G.
	Title	Structural features, oxygen and fluorine doping in Cu-based superconductors			Type	A1 Journal article
	Year	1997	Publication	Physica: C : superconductivity T2 – International Conference on Materials and Mechanisms of, Superconductivity – High Temperature Superconductors V, Feb. 28-Mar. 04, 1997, Beijing, Peoples R. China	Abbreviated Journal	Physica C
	Volume	282	Issue	Part 1	Pages	61-64
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	The variation of structures and superconducting properties by changing extra oxygen or fluorine atoms concentration in Hg-based Cu mixed oxides and YBa2Cu3O6+delta was studied. The data obtained by NPD study of Hg-1201 can be considered as an evidence of the conventional oxygen doping mechanism with 2 delta holes per (CuO2) layer. The extra oxygen atom was found to be located in the middle of the Hg mesh only. Different formal charges of oxygen and fluorine inserted into reduced 123 structure results in its distinct variations. The fluorine incorporation into strongly reduced YBa2Cu3O6+delta causes a significant structural rearrangement and the formation of a new compound with a composition close to YBa2Cu3O6F2 (tetragonal alpha = 3.87 Angstrom and c approximate to 13 Angstrom), which structure was deduced from the combined results of X-ray diffraction, electron diffraction and high resolution electron microscopy. Fluorination treatment by XeF2 of nonsuperconducting 123 samples causes an appearance of bulk superconductivity with T-c up to 94K.
	Address
	Corporate Author				Thesis
	Publisher	Elsevier Science	Place of Publication	Amsterdam	Editor
	Language		Wos	A1997XZ90400019	Publication Date	2002-07-25
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4534;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.404	Times cited	10	Open Access
	Notes				Approved	Most recent IF: 1.404; 1997 IF: 2.199
	Call Number	UA @ lucian @ c:irua:95866			Serial	3237
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	Author	Habermeier, H.-U.; Cristiani, G.; Kremer, R.K.; Lebedev, O.; Van Tendeloo, G.
	Title	Cuprate/manganite superlattices: a model system for a bulk ferromagnetic superconductor			Type	A1 Journal article
	Year	2001	Publication	Physica: C : superconductivity	Abbreviated Journal	Physica C
	Volume	364/365	Issue		Pages	298-304
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	000172155700069	Publication Date	2002-07-25
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4534;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.404	Times cited	91	Open Access
	Notes				Approved	Most recent IF: 1.404; 2001 IF: 0.806
	Call Number	UA @ lucian @ c:irua:54794			Serial	591
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	Author	Abakumov, A.; Rozova, M.; Shpanchenko, R.; Kovba, M.; Putilin, S.; Antipov, E.; Lebedev, O.; Van Tendeloo, G.; Kopnin, E.; Karpinski, J.
	Title	Effects of fluorination on the structure and superconducting properties of Y2Ba4Cu7O14+ phases			Type	A1 Journal article
	Year	1998	Publication	Physica: C : superconductivity	Abbreviated Journal	Physica C
	Volume	301	Issue		Pages	155-164
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	000074516500005	Publication Date	2002-07-25
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4534;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.404	Times cited	9	Open Access
	Notes				Approved	Most recent IF: 1.404; 1998 IF: 1.086
	Call Number	UA @ lucian @ c:irua:25663			Serial	862
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	Author	Shpanchenko, R.V.; Rozova, M.G.; Abakumov, A.M.; Ardashnikova, E.I.; Kovba, M.L.; Putilin, S.N.; Antipov, E.V.; Lebedev, O.I.; Van Tendeloo, G.
	Title	Inducing superconductivity and structural transformations by fluorination of reduced YBCO			Type	A1 Journal article
	Year	1997	Publication	Physica: C : superconductivity	Abbreviated Journal	Physica C
	Volume	280	Issue		Pages	272-280
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	A1997XX21600005	Publication Date	0000-00-00
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4534	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.404	Times cited	35	Open Access
	Notes				Approved	Most recent IF: 1.404; 1997 IF: 2.199
	Call Number	UA @ lucian @ c:irua:21449			Serial	1604
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	Author	Tafuri, F.; Granozio, F.M.; Carillo, F.; Lombardi, F.; Di Uccio, U.S.; Verbist, K.; Lebedev, O.; Van Tendeloo, G.
	Title	Josephson phenomenology and microstructure of YBaCuO artificial grain boundaries characterized by misalignment of the c-axes			Type	A1 Journal article
	Year	1999	Publication	Physica: C : superconductivity	Abbreviated Journal	Physica C
	Volume	327	Issue		Pages	63-71
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	YBa(2)Cu(3)O(7-delta) (YBCO) grain boundaries characterized by a misalignment of the c-axes (45 degrees c-axis tilt or 45 degrees c-axis twist) have been obtained by employing a recently implemented biepitaxial technique. Junctions based on these grain boundaries exhibit good Josephson properties useful for applications. High values of the I(C)R(N) product and a Fraunhofer-like dependence of the critical current on the magnetic field, differently from traditional biepitaxial junctions, have been obtained. The correlation between transport properties and microstructure has been investigated by Transmission Electron Microscopy (TEM), which was also performed on previously measured junctions. The presence of atomically clean basal plane (BP) faced tilt boundaries, among other types of interfaces, has been shown. The possibility of selecting these kinds of boundaries by controlling film growth, and their possible advantages in terms of reproducibility and uniformity of the junction properties an discussed. The possibility of employing these junctions to explore the symmetry of the order parameter is also discussed. (C) 1999 Elsevier Science B.V. All rights reserved.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	000084325700008	Publication Date	2002-07-25
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4534;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.404	Times cited	7	Open Access
	Notes				Approved	Most recent IF: 1.404; 1999 IF: 1.114
	Call Number	UA @ lucian @ c:irua:95180			Serial	1752
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	Author	Scotti di Uccio, U.; Miletto Granozio, F.; di Chiara, A.; Tafuri, F.; Lebedev, O.I.; Verbist, K.; Van Tendeloo, G.
	Title	Phase competition between Y₂BaCuO₅ and Y₂O₃ precipitates in Y-rich YBCO thin films			Type	A1 Journal article
	Year	1999	Publication	Physica: C : superconductivity	Abbreviated Journal	Physica C
	Volume	321	Issue		Pages	162-176
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Amsterdam	Editor
	Language		Wos	000083004400004	Publication Date	0000-00-00
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0921-4534	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	1.404	Times cited	17	Open Access
	Notes				Approved	Most recent IF: 1.404; 1999 IF: 1.114
	Call Number	UA @ lucian @ c:irua:29725			Serial	2579
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	Author	Ahenach, J.; Cool, P.; Vansant, E.F.; Lebedev, O.; van Landuyt, J.
	Title	Influence of water on the pillaring of montmorillonite with aminopropyltriethoxysilane			Type	A1 Journal article
	Year	1999	Publication	Physical chemistry, chemical physics	Abbreviated Journal	Phys Chem Chem Phys
	Volume	1	Issue		Pages	3703-3708
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT); Laboratory of adsorption and catalysis (LADCA)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Cambridge	Editor
	Language		Wos	000081765300046	Publication Date	2002-07-26
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1463-9076;1463-9084;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	4.123	Times cited	10	Open Access
	Notes				Approved	Most recent IF: 4.123; 1999 IF: NA
	Call Number	UA @ lucian @ c:irua:28250			Serial	1660
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	Author	Stefanovich, S.Y.; Belik, A.A.; Azuma, M.; Takano, M.; Baryshnikova, O.V.; Morozov, V.A.; Lazoryak, B.I.; Lebedev, O.I.; Van Tendeloo, G.
	Title	Antiferroelectric phase transition in Sr₉In(PO₄)₇			Type	A1 Journal article
	Year	2004	Publication	Physical review : B : condensed matter and materials physics	Abbreviated Journal	Phys Rev B
	Volume	70	Issue		Pages	172103,1-4
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Lancaster, Pa	Editor
	Language		Wos	000225477000003	Publication Date	2004-11-12
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1098-0121;1550-235X;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	3.836	Times cited	17	Open Access
	Notes	Iuap P5/01			Approved	Most recent IF: 3.836; 2004 IF: 3.075
	Call Number	UA @ lucian @ c:irua:54744			Serial	135
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	Author	Prodi, A.; Daoud-Aladine, A.; Gozzo, F.; Schmitt, B.; Lebedev, O.; Van Tendeloo, G.; Gilioli, E.; Bolzoni, F.; Aruga-Katori, H.; Takagi, H.; Marezio, M.; Gauzzi, A.;
	Title	Commensurate structural modulation in the charge- and orbitally ordered phase of the quadruple perovskite (NaMn₃)Mn₄O₁₂			Type	A1 Journal article
	Year	2014	Publication	Physical review : B : condensed matter and materials physics	Abbreviated Journal	Phys Rev B
	Volume	90	Issue	18	Pages	180101
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	By means of synchrotron x-ray and electron diffraction, we studied the structural changes at the charge order transition T-CO = 176 K in the mixed-valence quadruple perovskite (NaMn3)Mn4O12. Below T-CO we find satellite peaks indicating a commensurate structural modulation with the same propagation vector q = ( 1/2,0,-1/2) of the CE magnetic structure that orders at low temperatures, similarly to the case of simple perovskites such as La0.5Ca0.5MnO3. In the present case, the modulated structure, together with the observation of a large entropy change at T-CO, gives evidence of a rare case of full Mn3+/Mn4+ charge and orbital order, consistent with the Goodenough-Kanamori model.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Wos	000344915100001	Publication Date	2014-11-10
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1098-0121;1550-235X;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	3.836	Times cited	11	Open Access
	Notes				Approved	Most recent IF: 3.836; 2014 IF: 3.736
	Call Number	UA @ lucian @ c:irua:122097			Serial	406
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	Author	Wang, Z.-H.; Lebedev, O.I.; Van Tendeloo, G.; Cristiani, G.; Habermeier, H.-U.
	Title	Crosshatching on La_0.5Ca_0.5MnO₃ ultrathin films epitaxially grown on SrTiO₃(100)			Type	A1 Journal article
	Year	2008	Publication	Physical review : B : condensed matter and materials physics	Abbreviated Journal	Phys Rev B
	Volume	77	Issue	11	Pages	1-5
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	The morphological evolution in La(0.5)Ca(0.5)MnO(3)/SrTiO(3)(100) ultrathin films has been revealed by atomic force microscopy. It was found that ordered linear defects, which are in 1-2 unit cells high and oriented along the cubic [110] and [100] directions, first appear on the smooth surface of films with a thickness of 10 nm. As the epitaxial growth proceeds, these lines on surface develop into a crosshatch pattern for films with a thickness of 25 nm. Using the results of transmission electron microscopy and electrical measurements, we discuss the interplay between the surface pattern formation, the internal dislocation structure, and the variations in the electrical properties.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Lancaster, Pa	Editor
	Language		Wos	000254542800126	Publication Date	2008-03-18
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1098-0121;1550-235X;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	3.836	Times cited	8	Open Access
	Notes	ESTEEM nr 026019			Approved	Most recent IF: 3.836; 2008 IF: 3.322
	Call Number	UA @ lucian @ c:irua:70022			Serial	548
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	Author	Lebedev, O.I.; Van Tendeloo, G.; Attfield, J.P.; McLaughlin, A.C.
	Title	Defect structure of ferromagnetic superconducting RuSr₂GdCu₂O₈			Type	A1 Journal article
	Year	2006	Publication	Physical review : B : condensed matter and materials physics	Abbreviated Journal	Phys Rev B
	Volume	73	Issue	22	Pages
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	The structure and defect structure of superconducting ferromagnetic bulk RuSr2GdCu2O8 has been investigated using high-resolution transmission electron microscopy and high-resolution scanning transmission microscopy. Two distinct, but closely related structures, due to ordering of rotated RuO6 octahedra and due to Cu substitution in the Ru-O layer, have been revealed. The structure of Ru1-xSr2GdCu2+xO8-delta can be described as a periodic alteration along the c axis of CuO4 planes and RuO6 octahedra. The unit-cell parameters of this phase are root 2a(p) x root 2a(p) x 2c. The possible influence of this phase and defect structure on the sensitivity of the superconductivity and magnetic properties is discussed. Local defects such as 90 S domain boundaries, (130) antiphase boundaries, and the associated dislocations are analyzed.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication	Lancaster, Pa	Editor
	Language		Wos	000238696300115	Publication Date	2006-06-26
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	1098-0121;1550-235X;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	3.836	Times cited	11	Open Access
	Notes	Iap V-I			Approved	Most recent IF: 3.836; 2006 IF: 3.107
	Call Number	UA @ lucian @ c:irua:59707			Serial	619
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	Author	Blumenau, A.T.; Jones, R.; Frauenheim, T.; Willems, B.; Lebedev, O.I.; Van Tendeloo, G.; Fisher, D.; Martineau, P.M.
	Title	Dislocations in diamond : dissociation into partials and their glide motion			Type	A1 Journal article
	Year	2003	Publication	Physical review : B : condensed matter and materials physics	Abbreviated Journal	Phys Rev B
	Volume	68	Issue	1	Pages	014115-14119
	Keywords	A1 Journal article; Electron microscopy for materials research (EMAT)
	Abstract	The dissociation of 60degrees and screw dislocations in diamond is modeled in an approach combining isotropic elasticity theory with ab initio-based tight-binding total-energy calculations. Both dislocations are found to dissociate with a substantial lowering of their line energies. For the 60degrees dislocation, however, an energy barrier to dissociation is found. We investigate the core structure of a screw dislocation distinguishing “shuffle,” “mixed,” and “glide” cores. The latter is found to be the most stable undissociated screw dislocation. Further, the glide motion of 90degrees and 30degrees partials is discussed in terms of a process involving the thermal formation and subsequent migration of kinks along the dislocation line. The calculated activation barriers to dislocation motion show that the 30degrees partial is less mobile than the 90degrees partial. Finally, high-resolution electron microscopy is performed on high-temperature, high-pressure annealed natural brown diamond, allowing the core regions of 60degrees dislocations to be imaged. The majority of dislocations are found to be dissociated. However, in some cases, undissociated 60degrees dislocations were also observed.
	Address
	Corporate Author				Thesis
	Publisher		Place of Publication		Editor
	Language		Wos	000184582900050	Publication Date	2003-08-01
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0163-1829;1095-3795;	ISBN		Additional Links	UA library record; WoS full record; WoS citing articles
	Impact Factor	3.836	Times cited	39	Open Access
	Notes				Approved	Most recent IF: 3.836; 2003 IF: NA
	Call Number	UA @ lucian @ c:irua:103800			Serial	734
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