Magnetism and charge ordering in Fe3O2BO3 ludwigite

被引：11
|
作者：
Larrea, JA
Sánchez, DR
Baggio-Saitovitch, EM
Fernandes, JC
Guimaraes, RB
Continentino, MA
Litterst, FJ
机构：
[1] CNPq, CBPF, DME, BR-22290180 Urca, RJ, Brazil
[2] Univ Fed Fluminense, Inst Fis, BR-24020 Niteroi, RJ, Brazil
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2001年 / 226卷
关键词：
charge fluctuations; low-dimensional systems; Mossbauer spectroscopy;
D O I：
10.1016/S0304-8853(00)01316-0
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Features of the magnetic and charge ordering of the Fe3O2BO3 ludwigite have been studied using Mossbauer spectroscopy in the range of 4 K < T < 120 K. From the temperature dependence of the magnetic hyperfine fields (B-hf), associated to four different iron sites, three magnetic transitions, at 112, 73 and 40 K, can be distinguished in agreement with previous magnetization measurements. In the temperature region where a weak ferromagnetism appears, the B-hf of some Fe sites show two different values related with different canting angles. (C) 2001 Elsevier Science B.V. All rights reserved.
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收藏
页码：1079 / 1080
页数：2
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