Mossbauer study of Zn0.4Cu0.6Fe1.2Cr0.8O4

被引：5
|
作者：
An, DH [1 ]
Kang, KU [1 ]
Lee, BG [1 ]
Lim, JB [1 ]
Jang, SU [1 ]
Baek, KS [1 ]
Oak, HN [1 ]
机构：
[1] Yonsei Univ, Dept Phys, Inst Phys & Appl, Sudaemoon Ku, Seoul 120749, South Korea
来源：
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2003年 / 64卷 / 12期
关键词：
oxides; chemical synthesis; Mossbauer spectroscopy; magnetic properties;
D O I：
10.1016/S0022-3697(03)00271-3
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Zn0.4Cu0.6Fe1.2Cr0.8O4 has been studied by Mossbauer spectroscopy, SQUID magnetometry, and X-ray diffraction. The crystal is found to have a cubic spinel structure with the lattice constant a(0) = 8.3667 Angstrom. The iron ions are in ferric states and occupy both the tetrahedral (A) and octahedral (B) sites; the fractions of the iron ions at the A-sites and B-sites are 0.52 and 0.34, respectively. While spin orderings are collinear at higher temperatures, spin canting begins to appear around 25 K and increases with decreasing temperature; the canting angle at 4.7 K reaches up to 27degrees. Debye temperatures of the tetrahedral and octahedral sites are determined to be 339 and 335 K, respectively. (C) 2003 Elsevier Ltd. All rights reserved.
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收藏
页码：2351 / 2355
页数：5
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