Direct observation of charge mediated lattice distortions in complex oxide solid solutions

被引：30

作者：

Sang, Xiahan ^{[1
]}

Grimley, Everett D. ^{[1
]}

Niu, Changning ^{[1
]}

Irving, Douglas L. ^{[1
]}

LeBeau, James M. ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Mat Sci & Engn, Raleigh, NC 27606 USA

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 06期

基金：

美国国家科学基金会;

关键词：

INITIO MOLECULAR-DYNAMICS; TOTAL-ENERGY CALCULATIONS; ATOMIC-SCALE; IMAGES;

D O I：

10.1063/1.4908124

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Using aberration corrected scanning transmission electron microscopy combined with advanced imaging methods, we directly observe atom column specific, picometer-scale displacements induced by local chemistry in a complex oxide solid solution. Displacements predicted from density functional theory were found to correlate with the observed experimental trends. Further analysis of bonding and charge distribution was used to clarify the mechanisms responsible for the detected structural behavior. By extending the experimental electron microscopy measurements to previously inaccessible length scales, we identified correlated atomic displacements linked to bond differences within the complex oxide structure. (C) 2015 AIP Publishing LLC.

引用

页数：5

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