Structural properties and charge-ordering transition in LaSr2Mn2O7

被引：106

作者：

Li, JQ

Matsui, Y

Kimura, T

Tokura, Y

机构：

[1] Natl Inst Res Inorgan Mat, Ibaraki, Osaka 305, Japan

[2] Joint Res Ctr Atom Technol, Tsukuba, Ibaraki 305, Japan

[3] Univ Tokyo, Dept Appl Phys, Tokyo 113, Japan

来源：

PHYSICAL REVIEW B | 1998年 / 57卷 / 06期

关键词：

D O I：

10.1103/PhysRevB.57.R3205

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Transmission-electron-microscopy measurements characterizing the structure and charge-ordered states in LaSr2Mn2O7 are presented. The crystal structure of this phase has been identified as a well-defined 327 layered structure by high-resolution electron microscopy and image simulation. Electron diffraction reveals at low temperature the presence of additional superstructure spots along the [110] direction. This superstructure is interpreted in terms of the charge ordering of Mn3+ and Mn4+ associated with the d(z2) orbital ordering of Mn3+ Possible ordering models are proposed.

引用

页码：R3205 / R3208

页数：4

共 14 条

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