Lattice mismatch accommodation via oxygen vacancy ordering in epitaxial La0.5Sr0.5CoO3-δ thin films

被引：120

作者：

Gazquez, J. ^{[1
,2
]}

Bose, Shameek ^{[3
]}

Sharma, M. ^{[3
]}

Torija, M. A. ^{[3
]}

Pennycook, S. J. ^{[2
]}

Leighton, C. ^{[3
]}

Varela, M. ^{[1
,2
]}

机构：

[1] Univ Complutense Madrid, E-28040 Madrid, Spain

[2] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37830 USA

[3] Univ Minnesota, Dept Chem Engn & Mat Sci, Minneapolis, MN 55455 USA

来源：

APL MATERIALS | 2013年 / 1卷 / 01期

基金：

美国国家科学基金会; 欧洲研究理事会;

关键词：

MAGNETIC PHASE-SEPARATION;

D O I：

10.1063/1.4809547

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The properties of complex oxide films depend sensitively on epitaxial strain. This strain affects bond lengths and angles, and defect types and densities, thus impacting physical properties. In this work we perform detailed characterization of depth-dependent strain in epitaxial La0.5Sr0.5CoO3-delta (LSCO) films on SrTiO3(001), SrTiO3(110), and LaAlO3(001) substrates, combining high resolution x-ray diffraction and scanning transmission electron microscopy, in addition to geometric phase analysis. We elucidate a fundamental link between strain state and O vacancy ordering in LSCO films, where lattice mismatch and crystallographic orientation can be used to manipulate the modulation vector of the long-range vacancy order, thus providing a new approach to tailor the properties of such films. (C) 2013 Author(s).

引用

页数：7

共 22 条

[1] Exploring Mesoscopic Physics of Vacancy-Ordered Systems through Atomic Scale Observations of Topological Defects [J].

Borisevich, A. Y. ;

Morozovska, A. N. ;

Kim, Young-Min ;

Leonard, D. ;

Oxley, M. P. ;

Biegalski, M. D. ;

Eliseev, E. A. ;

Kalinin, S. V. .

PHYSICAL REVIEW LETTERS, 2012, 109 (06)

[2] Strain-Induced Spin States in Atomically Ordered Cobaltites [J].

Choi, Woo Seok ;

Kwon, Ji-Hwan ;

Jeen, Hyoungjeen ;

Hamann-Borrero, Jorge E. ;

Radi, Abdullah ;

Macke, Sebastian ;

Sutarto, Ronny ;

He, Feizhou ;

Sawatzky, George A. ;

Hinkov, Vladimir ;

Kim, Miyoung ;

Lee, Ho Nyung .

NANO LETTERS, 2012, 12 (09) :4966-4970

[3] Epitaxial Strain-Induced Chemical Ordering in La0.5Sr0.5CoO3-δ Films on SrTiO3 [J].

Donner, Wolfgang ;

Chen, Chonglin ;

Liu, Ming ;

Jacobson, Allan J. ;

Lee, Yueh-Lin ;

Gadre, Milind ;

Morgan, Dane .

CHEMISTRY OF MATERIALS, 2011, 23 (04) :984-988

[4] Ferromagnetic order in epitaxially strained LaCoO3 thin films [J].

Fuchs, D. ;

Pinta, C. ;

Schwarz, T. ;

Schweiss, P. ;

Nagel, P. ;

Schuppler, S. ;

Schneider, R. ;

Merz, M. ;

Roth, G. ;

von Loehneysen, H. .

PHYSICAL REVIEW B, 2007, 75 (14)

[5] Tuning the magnetic properties of LaCoO3 thin films by epitaxial strain [J].

Fuchs, D. ;

Arac, E. ;

Pinta, C. ;

Schuppler, S. ;

Schneider, R. ;

von Loehneysen, H. .

PHYSICAL REVIEW B, 2008, 77 (01)

[6] Atomic-Resolution Imaging of Spin-State Superlattices in Nanopockets within Cobaltite Thin Films [J].

Gazquez, Jaume ;

Luo, Weidong ;

Oxley, Mark P. ;

Prange, Micah ;

Torija, Maria A. ;

Sharma, Manish ;

Leighton, Chris ;

Pantelides, Sokrates T. ;

Pennycook, Stephen J. ;

Varela, Maria .

NANO LETTERS, 2011, 11 (03) :973-976

[7] Quantitative measurement of displacement and strain fields from HREM micrographs [J].

Hytch, MJ ;

Snoeck, E ;

Kilaas, R .

ULTRAMICROSCOPY, 1998, 74 (03) :131-146

[8]

Ito Y, 2002, J AM CERAM SOC, V85, P969, DOI 10.1111/j.1151-2916.2002.tb00201.x

[9] MAGNETIC COMPOUNDS WITH PEROVSKITE STRUCTURE .3. FERROMAGNETIC COMPOUNDS OF COBALT [J].

JONKER, GH ;

VANSANTEN, JH .

PHYSICA, 1953, 19 (01) :120-130

[10]

Kim YM, 2012, NAT MATER, V11, P888, DOI [10.1038/NMAT3393, 10.1038/nmat3393]

← 1 2 3 →