Superstructure of tetragonal BaGd2Mn2O7

被引：7

作者：

Kamegashira, N ^{[1
]}

Satoh, H ^{[1
]}

Mikami, T ^{[1
]}

机构：

[1] Toyohashi Univ Technol, Dept Mat Sci, Toyohashi, Aichi 4418580, Japan

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2000年 / 311卷 / 01期

关键词：

crystal structure; oxygen octahedron; barium gadolinium manganese oxide;

D O I：

10.1016/S0925-8388(00)00864-1

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 a layered perovskite compound, BaGd2Mn2O7, was analyzed for the powder X-ray diffraction data by Rietveld method. The tetragonal BaGd2Mn2O7 phase has superlattice lines so that the space group of P4(2)/mnm (No. 136) was determined with the unit cell dimensions a=0.55014(1) and c=2.02457(5) nm. The MnO6 octahedron was distorted and tilts by 6 degrees apart from the c axis mutually in the reverse direction. (C) 2000 Elsevier Science S.A. All rights reserved.

引用

页码：69 / 73

页数：5

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