Physics of nanocrystalline magnetic materials

被引：7

作者：

Dahlgren, M ^{[1
]}

Grössinger, R ^{[1
]}

机构：

[1] TU Vienna, Inst Experimentalphys, AU-1040 Vienna, Austria

来源：

MAGNETISM, MAGNETIC MATERIALS AND THEIR APPLICATIONS | 1999年 / 302-3卷

关键词：

exchange coupling; anisotropy field; remanence; nanocrystalline materials;

D O I：

10.4028/www.scientific.net/MSF.302-303.263

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The mechanism of exchange coupling will be discussed in single phase hard magnetic materials as well as in nanocomposites. Temperature dependent anisotropy field H-A measurements will be presented on Pr-Fe-B samples. Additionally the temperature dependence (4.2K < T < 300K) of the saturation magnetisation, of the remanence and of the coercivity will be presented. From the ratio J(r/)J(S) the degree of enhancement can be deduced. At lower temperatures a decoupling of the grains was observed which becomes also visible in the H-A(T) behaviour. The influence of the exchange coupling on the Curie temperatures as well as on the spin reorientation temperature for Nd-Fe-B and Pr-Fe-B based samples is shown.

引用

页码：263 / 272

页数：10

共 19 条

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