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Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System
Xu, YB; Tang, YL; Zhu, YL; Liu, Y; Li, S; Zhang, SR; Ma, XL; Ma, XL (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2016-10-11
发表期刊SCIENTIFIC REPORTS
ISSN2045-2322
卷号6
摘要Ferroelectric thin films grown on high index substrates show unusual structural and switching dynamics due to their special strain states. Understanding the misfit relaxation behavior is crucial to facilitate the high index thin film growth with improved quality. In this paper, ferroelectric PbTiO3 thin films were grown on LaAlO3 (111) substrates by pulsed laser deposition technique. The microstructures were investigated by combinations of conventional and aberration-corrected transmission electron microscopy. Diffraction contrast analysis and high resolution imaging reveal that high density interfacial dislocations were distributed at the interfaces. These dislocations have mixed character with Burgers vectors of a <110> and line directions of <112>. The edge components of the dislocations, with the Burgers vectors parallel to the interface, accommodate the lattice mismatch and are the main contributor to the misfit relaxation of this system. The formation mechanism of these dislocations is proposed and discussed to elucidate the novel mismatch relaxation behavior of <111> oriented perovskite films.
部门归属[xu, y. b. ; tang, y. l. ; zhu, y. l. ; liu, y. ; li, s. ; zhang, s. r. ; ma, x. l.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china
学科领域Multidisciplinary Sciences
资助者National Natural Science Foundation of China [51231007, 51571197, 51501194]; National Basic Research Program of China [2014CB921002]; Youth Innovation Promotion Association of CAS [2016177]
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/76239
专题中国科学院金属研究所
通讯作者Ma, XL (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Xu, YB,Tang, YL,Zhu, YL,et al. Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System[J]. SCIENTIFIC REPORTS,2016,6.
APA Xu, YB.,Tang, YL.,Zhu, YL.,Liu, Y.,Li, S.,...&Ma, XL .(2016).Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System.SCIENTIFIC REPORTS,6.
MLA Xu, YB,et al."Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System".SCIENTIFIC REPORTS 6(2016).
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