Microstructure tuning of epitaxial BaTiO(3) (-) (x) thin films grown using laser molecular-beam epitaxy by varying the oxygen pressure

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	Microstructure tuning of epitaxial BaTiO(3) (-) (x) thin films grown using laser molecular-beam epitaxy by varying the oxygen pressure
	Y. L. Zhu; S. J. Zheng; D. Chen; X. L. Ma
	2010
发表期刊	Thin Solid Films
ISSN	0040-6090
卷号	518 期号:14 页码:3669-3673
摘要	Microstructural properties are found to be variant in the BaTiO(3) (- x) films grown on SrTiO(3)(001) substrate under various oxygen pressures from 2 x 10(-2) Pa to 2 x 10(-5) Pa by laser molecular-beam epitaxy. Transmission electron microscopic studies reveal that the predominant defects in the films change from threading dislocations into (111) planar defects (i.e. stacking faults and nanotwins) by lowering the oxygen pressure. High density of these defects was observed in the BaTiO(3) (-) (x) film prepared at the oxygen pressure of 2 x 10(-5) Pa, which shows metallic behavior. The relationships between oxygen pressure, microstructure, and electrical properties are established on the basis of oxygen deficiency. The formation of nanotwins in highly oxygen-deficient BaTiO(3 - x) epitaxial thin films results from accommodating excess oxygen vacancies induced by lowering oxygen pressure. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[zhu, y. l.; zheng, s. j.; chen, d.; ma, x. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china.;zhu, yl (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, peoples r china;ylzhu@imr.ac.cn
关键词	Batio(3-x) Thin Films Oxides Oxygen Pressure {111} Twins Microstructure X-ray Diffraction Laser Molecular Beam Epitaxy Transmission Electron Microscopy 111 Twin-boundary Transport-properties Misfit Relaxation Srtio3 Stoichiometry Perovskites Interface Mgo
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文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31801
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. L. Zhu,S. J. Zheng,D. Chen,et al. Microstructure tuning of epitaxial BaTiO(3) (-) (x) thin films grown using laser molecular-beam epitaxy by varying the oxygen pressure[J]. Thin Solid Films,2010,518(14):3669-3673.
APA	Y. L. Zhu,S. J. Zheng,D. Chen,&X. L. Ma.(2010).Microstructure tuning of epitaxial BaTiO(3) (-) (x) thin films grown using laser molecular-beam epitaxy by varying the oxygen pressure.Thin Solid Films,518(14),3669-3673.
MLA	Y. L. Zhu,et al."Microstructure tuning of epitaxial BaTiO(3) (-) (x) thin films grown using laser molecular-beam epitaxy by varying the oxygen pressure".Thin Solid Films 518.14(2010):3669-3673.