Neel temperature enhancement in nanostructured nickel zinc ferrite

被引：101

作者：

Ponpandian, N

Narayanasamy, A

Chinnasamy, CN

Sivakumar, N

Greneche, JM

Chattopadhyay, K

Shinoda, K

Jeyadevan, B

Tohji, K

机构：

[1] Univ Madras, Ctr Mat Sci, Dept Phys Nucl, Madras 600025, Tamil Nadu, India

[2] Univ Maine, Fac Sci, CNRS, UMR 6087,Lab Phys Etat Condense, F-72085 Le Mans, France

[3] Indian Inst Sci, Dept Met, Bangalore 560012, Karnataka, India

[4] Tohoku Univ, Grad Sch Environm Studies, Sendai, Miyagi 9808579, Japan

来源：

APPLIED PHYSICS LETTERS | 2005年 / 86卷 / 19期

关键词：

D O I：

10.1063/1.1925755

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The Neel temperature of Ni0.5Zn0.5Fe2O4 spinel ferrite increases significantly from 538 K in the bulk state to 592 K when the grain size is reduced to 16 nm by milling in a high-energy ball mill. This has been attributed to an increase in the AB superexchange interaction strength due to a possible enhancement in the magnetic ion concentration in the A-site on milling, as is evident from extended x-ray absorption fine structure and in-field Mossbauer measurements. (c) 2005 American Institute of Physics.

引用

页码：1 / 3

页数：3

共 18 条

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