Local trimer orbital ordering in LiNiO2 studied by quantitative convergent beam electron diffraction technique

被引：11

作者：

Cao, Jiefeng ^{[1
]}

Zou, Huamin ^{[1
,2
]}

Guo, Chao ^{[1
]}

Chen, Zhenlian ^{[1
]}

Pu, Shizhou ^{[1
]}

机构：

[1] Wuhan Univ, Dept Phys, Wuhan 430072, Peoples R China

[2] Wuhan Univ, Ctr Electron Microscopy, Wuhan 430072, Peoples R China

来源：

SOLID STATE IONICS | 2009年 / 180卷 / 20-22期

基金：

中国国家自然科学基金;

关键词：

LiNiO2; Local orbital ordering; QCBED; ATOMIC SCATTERING FACTORS; MAGNETIC-PROPERTIES;

D O I：

10.1016/j.ssi.2009.06.009

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A local trimer orbital ordering model of LiNiO2 was studied by means of theoretical calculation and experimental measurement of electron structure factors. Based on the trimer model, the electron structure factors were calculated by using the scattering factor of non-spherical Ni3+ ion. From these results, it is found that the effect of local orbital ordering on the electron structure factors of several subtle reflections, such as (202) and (107), is very large. The electron structure factors of these Subtle reflections were measured by quantitative convergent beam electron diffraction method. The experimentally measured electron structure factor Values of these reflections indicate that the trimer orbital ordering model is more close to the true structure of LiNiO2. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：1209 / 1214

页数：6

共 18 条

[1] Synthesis, structural characterization and magnetic properties of quasistoichiometric LiNiO2 [J].