Crystal growth and structure of La3M4+Ga5O14 (M=Ti, Zr, Hf)

被引：14
|
作者：
Takeda, H
Kato, T
Chani, VI
Shimamura, K
Fukuda, T
机构：
[1] Tohoku Univ, Inst Mat Res, Aoba Ku, Sendai, Miyagi 9808577, Japan
[2] Tohoku Univ, Interdisciplinary Res Ctr, Sendai, Miyagi 9808577, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 1999年 / 290卷 / 1-2期
关键词：
gallates; crystal growth; crystal structure; single crystal; X-ray diffraction;
D O I：
10.1016/S0925-8388(99)00194-2
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：
La3M4+Ga5O14 (M=Ti, Zr, Hf) compounds were crystallized using the micro-pulling down and Czochralski techniques. Both growth methods showed that these three crystals are peritectic compounds. The structure of La3TiGa5O14 (LTiG) crystal was refined using single-crystal X-ray diffraction data. LTiG was observed to be isostructural to Ca3Ga2Ge4O14 (P321 (No.150), Z=1) and the lattice parameters are a=8.223(1), c=5.109(1) Angstrom. The Ti atoms were found to occupy octahedral (1a) and tetrahedral (3f) sites coordinated by six and four oxygen atoms, respectively. (C) 1999 Elsevier Science S.A. All rights reserved.
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页码：244 / 249
页数：6
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