Structure and magnetic properties of nanocrystalline ferrimagnetic CdFe2O4 spinel

被引：32
作者：
Chinnasamy, CN
Narayanasamy, A
Ponpandian, N
Joseyphus, RJ
Chattopadhyay, K
Shinoda, K
Jeyadevan, B
Tohji, K
Nakatsuka, K
Guérault, H
Greneche, JM
机构：
[1] Univ Madras, Dept Nucl Phys, Ctr Mat Sci, Madras 600025, Tamil Nadu, India
[2] Univ Maine, Fac Sci, UPRESA CNRS 6087, Lab Phys Etat Condense, F-72085 Le Mans 9, France
[3] Tohoku Univ, Dept Geosci & Technol, Aoba Ku, Sendai, Miyagi 9808579, Japan
[4] Indian Inst Sci, Dept Met, Bangalore 560012, Karnataka, India
来源：
SCRIPTA MATERIALIA | 2001年 / 44卷 / 8-9期
关键词：
nanostructure; mechanical alloying; ferrites; Mossbauer effect; spin-glass;
D O I：
10.1016/S1359-6462(01)00846-6
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The nanocrystalline CdFe2O4 with various grain sizes were synthesized by ball milling in bulk material. The magnetization measurements reveal a spin-glass like surface structure and the material is found to have a large anisotropy. Mossbauer effect experiment at 10 K in an external magnetic field of 6 T applied parallel to the direction of gamma rays could clearly show that CdFe2O4 behaves like a mixed spinel on reducing the grain size to a few nanometers and that it exhibits ferrimagnetic ordering. Fe3+ spins at both the sites exhibit spin canting. The cation inversion is found to increase with decrease in grain size.
引用
收藏
页码：1411 / 1415
页数：5
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