Nanoscale phase competition during charge ordering in intrinsically strained La0.33Ca0.67MnO3 -: art. no. 180404

被引：28
|
作者：
Tao, J
Zuo, JM
机构：
[1] Univ Illinois, Dept Mat Sci & Engn, Urbana, IL 61801 USA
[2] Univ Illinois, F Seitz Mat Res Lab, Urbana, IL 61801 USA
来源：
PHYSICAL REVIEW B | 2004年 / 69卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.69.180404
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We show that strain has a large effect on charge ordering (CO) formation in La0.33Ca0.67MnO3 by in situ high-resolution electron microscopy. CO forms inside the orthorhombic domains of the distorted perovskite structure and results further strain. Inside a single domain upon cooling, CO follows three stages: disorder, cluster forming at T(*)similar to280 K and percolation at T(p)similar to235 K. While T-* is approximately constant, percolation temperature varies significantly between different domains and places, which we attribute to the effect of intrinsic strain on the one-electron bandwidth.
引用
收藏
页码：180404 / 1
页数：4
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