Preparation and magnetic properties of titanium-substituted LiZn ferrites via a sol-gel auto-combustion process

被引：82

作者：

Yue, ZX ^{[1
]}

Zhou, J ^{[1
]}

Wang, XH ^{[1
]}

Gui, ZL ^{[1
]}

Li, LT ^{[1
]}

机构：

[1] Tsing Hua Univ, Dept Mat Sci & Engn, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

来源：

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY | 2003年 / 23卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ferrites; LiZn ferrites; magnetic properties; sol-gel processes; (Li; Zn) (Fe; Ti)(2)O-4;

D O I：

10.1016/S0955-2219(02)00082-1

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A series of nitrate-citrate gels were prepared from metal nitrates and citric acid via a sol-gel process, in order to synthesize titanium-substituted lithium zinc (LiZn) ferrites with composition of Li0.5(0.4+x)Zn0.6TixFe(2.2-1.5x)O4 (x ranging from 0.05 to 0.20). The thermal decomposition process was investigated by DTA-TGA, IR and XRD techniques. The dried gels can burn in a self-propagating combustion process in air to transform into single-phase, nano-crystalline ferrite particles. The low-temperature sintering was realized using the synthesized powders, and the sintered ferrites have fine-grained microstructures and excellent magnetic properties. Appropriate amounts of titanium substituted for Fe in LiZn ferrites can significantly increase the permeability value. The prepared LiZn ferrites are good materials for multilayer chip inductors. (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：189 / 193

页数：5

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