Structure and magnetic properties of nanocrystalline ferrimagnetic CdFe2O4 spinel

被引：28

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

页码：1411 / 1415

页数：5

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