Characteristics and synthesis of Cu-Ni ferrite nanopowders by coprecipitation method with ultrasound irradiation

被引：91

作者：

Doh, SG

Kim, EB

Lee, BH

Oh, JH ^{[1
]}

机构：

[1] Inha Univ, Sch Mat Sci & Engn, Inchon 402751, South Korea

[2] Myongji Univ, Dept Inorgan Mat Engn, Yongin 449728, South Korea

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2004年 / 272卷

关键词：

ferrite nanopowder; ultrasound irradiation; coprecipitation; microwave absorbing;

D O I：

10.1016/j.jmmm.2003.12.926

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The Cu-Ni ferrite (Cu1-xNixFe2O4) nanopowders were prepared using coprecipitation method with ultrasound irradiation. The Cu1-xNixFe2O4 nanopowders were composed of a pure spinel phase with the grain size of 20-30 nm. The saturation magnetization of the ferrite powders were 53.1 emu/g at x = 0, 73.5 emu/g at x = 0.5 and 34.3 emu/g at x = 1. The nanopowders showed that the reflection loss was more than -10 dB in the range from 2.5 to 5.5 GHz. The matching frequency and matching thickness of the ferrite powders had varied sensitively on the composition of x (Ni content). (C) 2003 Elsevier B.V. All rights reserved.

引用

页码：2238 / 2240

页数：3