Transmission electron microscopy studies of the effect of A-site cation size mismatch and disorder on charge ordering behavior in (La1-xYx)0.5(Ca1-ySry)0.5MnO3

被引：8

作者：

Wang, YQ

Duan, XF

Wang, ZH

Shen, BG

机构：

[1] Chinese Acad Sci, Inst Phys, Beijing Lab Electron Microscopy, Beijing 100080, Peoples R China

[2] Chinese Acad Sci, Ctr Condensed Matter Phys, Inst Phys, State Key Lab Magnetism, Beijing 100080, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2001年 / 78卷 / 15期

关键词：

D O I：

10.1063/1.1364505

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The effects of A-site cation mismatch and disorder on the charge ordering (CO) behavior in the manganites (La1-xYx)(0.5)(Ca1-ySry)(0.5)MnO3 have been studied by transmission electron microscopy. The presence of the size mismatch and disorder suppresses the CO transition. Incommensurate CO modulations are observed in three samples with 0 less than or equal to sigma (2)less than or equal to0.003. Structural models, based on the selected area electron diffraction and high-resolution electron microscopy observation, are suggested for such kinds of incommensurate modulations. (C) 2001 American Institute of Physics.

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页码：2157 / 2159

页数：3

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