Growth and structure analysis of single crystal of tetragonal BaGd2Mn2O7 with a superlattice structure

被引：14
作者：
Kamegashira, N
Meng, J
Mori, T
Murase, A
Satoh, H
Shishido, T
Fukuda, T
机构：
[1] Toyohashi Univ Technol, Dept Mat Sci, Toyohashi, Aichi 4418580, Japan
[2] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
来源：
MATERIALS LETTERS | 2003年 / 57卷 / 13-14期
关键词：
single crystal; BaGd2Mn2O7; structure analysis; layered perovskite;
D O I：
10.1016/S0167-577X(02)01108-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Single crystal of BaGd2Mn2O7 was grown by the floating zone method, and its crystal structure was determined using single crystal X-ray method. This compound has the ordered structure of tilting oxygen octahedron surrounding a central manganese ion (space group P4(2)/mnm). The lattice constants are a=0.55374(8), c=2.0618(1) nm and Z=4. The oxygen octahedron surrounding a central manganese ion is slightly distorted and mutually tilts between the neighboring oxygen octahedrons with an angle of several degrees. These single crystal data confirmed our previous results from the Rietveld analysis of powder X-ray diffraction patterns [J. Alloys Compd. 311 (2000) 69]. (C) 2002 Elsevier Science B.V. All rights reserved.
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页码：1941 / 1944
页数：4
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