Charge/orbital ordering structure in ordered perovskite SM1/2Ba1/2MnO3

被引：30
|
作者：
Uchida, M [1 ]
Akahoshi, D
Kumai, R
Tomioka, Y
Arima, T
Tokura, Y
Matsui, Y
机构：
[1] Natl Inst Mat Sci, Adv Mat Lab, Tsukuba, Ibaraki 3050044, Japan
[2] Natl Inst Adv Ind Sci & Technol, Correlated Electron Res Ctr, AIST, Tsukuba, Ibaraki 3058562, Japan
[3] Univ Tsukuba, Inst Mat Sci, Tsukuba, Ibaraki 3058573, Japan
[4] Natl Inst Adv Ind Sci & Technol, ERATO, Spin Superstruct Project, JST,AIST, Tsukuba, Ibaraki 3058562, Japan
[5] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan
来源：
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2002年 / 71卷 / 11期
关键词：
Sm1/2Ba1/2MnO3; perovskite manganites; charge ordering; orbital ordering; electron diffraction; resonant X-ray scattering;
D O I：
10.1143/JPSJ.71.2605
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In an A-site ordered perovskite marganite Sm1/2Ba1/2MnO3, a new charge/orbital ordering pattern was found at room temperature. Electron diffraction studies revealed a series of superlattice reflections with modulation vectors at q(2) = (1/2, 1/2, 1/2) as well as at q(1) = (1/4, 1/4, 0) in the tetragonal setting (a(p) x a(p) x 2a(p), a(p) being the cubic perovskite lattice parameter). Together with the results of the resonant X-ray scattering and the charge-transport and magnetization measurements, a new model for the three-dimensional charge/orbital ordering in the ordered perovskite is proposed.
引用
收藏
页码：2605 / 2608
页数：4
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