The formation of the magnetic structure of charge ordered 3D and layered manganites: the crucial role of the orbital structure

被引：2

作者：

Gontchar, LE ^{[1
]}

Nikiforov, AE ^{[1
]}

机构：

[1] Urals State Univ, Ekaterinburg 620083, Russia

来源：

CZECHOSLOVAK JOURNAL OF PHYSICS | 2002年 / 52卷

关键词：

manganites; Jahn-Teller effect; charge ordering; orbital ordering; magnetic structure; spin waves;

D O I：

10.1007/s10582-002-0059-3

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The manganites with general formulae R(0.5)A(0.5)MnO(3) (3D-manganite), R(0.5)A(1.5)MnO(4) (layered manganite), and RA(2)Mn(2)O(7) (bilayer manganite), where R3+ is rare-earth ion, A(2+) is alkaline-earth ion, are known as charge ordered compounds at low temperatures with some R and A. In present work, it is shown how the charge ordering and crystal structure form the orbital and magnetic ones. The model of orbitally-dependent superexchange and single-ion anisotropy is used. Also we assume art ideal insulating state of the crystals. The model presented in this work allows to explain the CE- and A- magnetic structures in the terms of charge acid orbital structures.

引用

页码：A245 / A248

页数：4

共 6 条

[1] Charge ordering at room temperature in Tb0.5Ca0.5MnO3 [J].