Ultrafine SrM particles with high coercivity by chemical coprecipitation

被引：21

作者：

Wang, JF ^{[1
]}

Ponton, CB ^{[1
]}

Harris, IR ^{[1
]}

机构：

[1] Univ Birmingham, Sch Met & Mat, Birmingham B15 2TT, W Midlands, England

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2002年 / 242卷

关键词：

Sr hexaferrite; Sm doping; magnetic properties; chemical coprecitation;

D O I：

10.1016/S0304-8853(01)01104-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ultrafine (similar to80nm). single domain Sr hexaferrite (SrM) particles with Sill additives were produced by chemical coprecipitation. The effects of the Sm3+, Sr2+ ratio on the crystallography and magnetic properties of Sm doped SrM ultrafine particles have been investigated. A very high coercity of 528 kA in (6635Oe) with a magnetisation at 1100 kA/m of 63.07 J/T kg was obtained for the sample of Sm3+/Sr2+ = (1)/(14) calcined at 850 degreesC lor 2 h in air. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：1464 / 1467

页数：4

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