Microstructure characterization and properties of chemically synthesized Co2Z hexaferrite

被引：51

作者：

Zhang, HG ^{[1
]}

Li, LT ^{[1
]}

Zhou, J ^{[1
]}

Yue, ZX ^{[1
]}

Ma, ZW ^{[1
]}

Gui, ZL ^{[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 | 2001年 / 21卷 / 02期

关键词：

Co(2)Z hexaferrite; ferrites; magnetic properties; phase evolution; self-propagating synthesis;

D O I：

10.1016/S0955-2219(00)00174-6

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：

Powders having stoichiometric composition of Co(2)Z (Ba3Co2Fe24O41) were prepared by gel self-propagating method and processed at different temperatures to study phase evolution process. Unlike other ferrites. Co(2)Z hexaferrite was not synthesized directly by gel self-propagating technique. but was formed gradually from some intermediate phases due to its complicated crystalline structure. After Z-type phase formed at relatively low temperatures of 1200 degreesC, the powders were annealed at temperatures lower than 1200 degreesC. It was found that, once formed, this phase was quite stable. At the same time, the morphology and distribution of hexagonal particles was improved. and ceramic samples thus achieved from the relative powders presented excellent ultrahigh frequency magnetic properties. (C) 2001 Published by Elsevier Science Ltd. All rights reserved.

引用

页码：149 / 153

页数：5

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