Giant linear strain gradient with extremely low elastic energy in a perovskite nanostructure array

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	Giant linear strain gradient with extremely low elastic energy in a perovskite nanostructure array
	Tang, Y. L. ; Zhu, Y. L. ; Liu, Y. ; Wang, Y. J. ; Ma, X. L.
刊名	NATURE COMMUNICATIONS
	2017-06-30
卷号	8 页码:-
ISSN号	2041-1723
通讯作者	Ma, XL (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Wenhua Rd 72, Shenyang 110016, Peoples R China. ; Ma, XL (reprint author), Lanzhou Univ Technol, Sch Mat Sci & Engn, Langongping Rd 287, Lanzhou 730050, Peoples R China.
中文摘要	Although elastic strains, particularly inhomogeneous strains, are able to tune, enhance or create novel properties of some nanoscale functional materials, potential devices dominated by inhomogeneous strains have not been achieved so far. Here we report a fabrication of inhomogeneous strains with a linear gradient as giant as 106 per metre, featuring an extremely lower elastic energy cost compared with a uniformly strained state. The present strain gradient, resulting from the disclinations in the BiFeO3 nanostructures array grown on LaAlO3 substrates via a high deposition flux, induces a polarization of several microcoulomb per square centimetre. It leads to a large built-in electric field of several megavoltage per metre, and gives rise to a large enhancement of solar absorption. Our results indicate that it is possible to build up large-scale strain-dominated nanostructures with exotic properties, which in turn could be useful in the development of novel devices for electromechanical and photoelectric applications.
学科主题	Multidisciplinary Sciences
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]; Key Research Program of Frontier Sciences CAS [QYZDJ-SSW-JSC010]
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/321006/78074]
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	Tang, Y. L.,Zhu, Y. L.,Liu, Y.,et al. Giant linear strain gradient with extremely low elastic energy in a perovskite nanostructure array[J]. NATURE COMMUNICATIONS,2017,8:-.
APA	Tang, Y. L.,Zhu, Y. L.,Liu, Y.,Wang, Y. J.,&Ma, X. L..(2017).Giant linear strain gradient with extremely low elastic energy in a perovskite nanostructure array.NATURE COMMUNICATIONS,8,-.
MLA	Tang, Y. L.,et al."Giant linear strain gradient with extremely low elastic energy in a perovskite nanostructure array".NATURE COMMUNICATIONS 8(2017):-.