Crystal structure refinement of tetragonal BaTb2Mn2O7

被引：12

作者：

Meng, J

Satoh, H

Kamegashira, N

机构：

[1] Department of Materials Science, Toyohashi University of Technology, Toyohashi, 440, Tempaku-cho

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 1996年 / 244卷 / 1-2期

关键词：

BaTb2Mn2O7; powder X-ray; crystal structure; Jahn-Teller effect;

D O I：

10.1016/S0925-8388(96)02439-5

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：

The crystal structure of layered perovskite compound BaTb2Mn2O7 was analyzed for the powder X-ray diffraction data with the Rietveld method. The BaTb2Mn2O7 phase has the tetragonal symmetry, space group I4/mmm with unit-cell dimensions a = 0.3883(2) nm and c = 2.017(1) nm. The MnO6 octahedron was distorted along the c axis because of the Jahn-Teller effect of Mn3+.

引用

页码：75 / 78

页数：4

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