Chemical disorder of La and Sr ions in the block layer of LaSrFeO4

被引：16

作者：

Bansal, C

Kawanaka, H

Bando, H

Sasahara, A

Miyamoto, R

Nihsihara, Y

机构：

[1] Ibaraki Univ, Fac Sci, Mito, Ibaraki 3108512, Japan

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 128卷 / 05期

基金：

日本学术振兴会;

关键词：

oxide materials; order-disorder effects; nuclear resonances;

D O I：

10.1016/j.ssc.2003.07.003

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Fe-57 Mossbauer spectroscopic studies were carried out on the single layered perovskite, LaSrFeO4, in the temperature range 15-380 K. The observed line width asymmetries in the line shapes of the spectra were understood to arise from a chemical disorder of La3+ and Sr2+ ions in the block layer of the perovskite structure. The temperature dependence of the hyperfine magnetic field, quadrupole interaction, and isomer shift observed for the system was also anal zed in terms of the local environment of Fe atoms in this structure. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：197 / 202

页数：6

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