A study on barium ferrite particles prepared by chemical coprecipitation

被引：10

作者：

Ng, WK ^{[1
]}

Ding, J ^{[1
]}

Chow, YY ^{[1
]}

Wang, S ^{[1
]}

Shi, Y ^{[1
]}

机构：

[1] Natl Univ Singapore, Dept Mat Sci, Singapore 119260, Singapore

来源：

JOURNAL OF MATERIALS RESEARCH | 2000年 / 15卷 / 10期

关键词：

D O I：

10.1557/JMR.2000.0310

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Chemical coprecipitation was employed to prepare fine particles of barium ferrite with high coercivity (450 kA/m). Magnetic properties of the bonded barium ferrite magnet were measured at different temperatures. The results were found to be fairly close to the theoretical values based on the Stoner-Wohlfarth model. Mechanical milling was utilized to prepare ultrafine dispersed barium ferrite particles. NaF was introduced as a dispersing agent during milling and subsequent heat treatment. The dispersed particles were compacted and then subjected to die upsetting at room temperature. A weak anisotropy in the coercivity and remanence was found in the directions parallel and perpendicular to the compaction direction.

引用

页码：2151 / 2156

页数：6

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