An effect of crystal tilt on the determination of ions displacements in perovskite oxides under BF/HAADF-STEM imaging mode

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	An effect of crystal tilt on the determination of ions displacements in perovskite oxides under BF/HAADF-STEM imaging mode
	Liu, Y. ; Zhu, Y. L. ; Tang, Y. L. ; Ma, X. L.
刊名	JOURNAL OF MATERIALS RESEARCH
	2017-03-01
卷号	32 期号:5 页码:947-956
ISSN号	0884-2914
通讯作者	Ma, XL (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
中文摘要	Effects of crystal tilt on the determination of the relative positions of different ion columns in compounds such as ferroelectric PbTiO3 are of critical importance, because the displacements of Ti and O relative to Pb correlate directly to the spontaneous polarization and ferroelectric properties. Here a study about the effects of small-angle crystal tilt on the relative image spots positions of different ions in PbTiO3 was carried out under high angle angular dark-field (HAADF) and bright-field imaging for aberration corrected Scanning Transmission Electron Microscope. The results indicate that crystal tilt affects the relative positions of Pb, Ti, and O greatly, and the effects are proved to depend highly on crystal tilt angle and PTO thickness. HAADF image simulations on PbTiO3, SrTiO3, and SrRuO3 indicate that the difference in atomic number is a main contributor to the relative image spot position change of different ion columns when crystal tilts.
学科主题	Materials Science, Multidisciplinary
收录类别	SCI
资助信息	National Natural Science Foundation of China [51231007, 51571197, 51501194, 51671194, 51521091]; National Basic Research Program of China [2014CB921002]; Chinese Academy of Sciences [QYZDJ-SSW-JSC010]; IMR SYNL-T. S. Ke Research Fellowship and the Youth Innovation Promotion Association CAS [2016177]
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78246]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Liu, Y.,Zhu, Y. L.,Tang, Y. L.,et al. An effect of crystal tilt on the determination of ions displacements in perovskite oxides under BF/HAADF-STEM imaging mode[J]. JOURNAL OF MATERIALS RESEARCH,2017,32(5):947-956.
APA	Liu, Y.,Zhu, Y. L.,Tang, Y. L.,&Ma, X. L..(2017).An effect of crystal tilt on the determination of ions displacements in perovskite oxides under BF/HAADF-STEM imaging mode.JOURNAL OF MATERIALS RESEARCH,32(5),947-956.
MLA	Liu, Y.,et al."An effect of crystal tilt on the determination of ions displacements in perovskite oxides under BF/HAADF-STEM imaging mode".JOURNAL OF MATERIALS RESEARCH 32.5(2017):947-956.