Micromagnetism of hard magnetic nanocrystalline materials

被引:33
作者
Kronmuller, H
机构
[1] Max-Planck-Institut für Metallforschung, Institut für Physik, D-70569 Stuttgart
来源
NANOSTRUCTURED MATERIALS | 1995年 / 6卷 / 1-4期
关键词
D O I
10.1016/0965-9773(95)00039-9
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
High-quality magnetic materials in general are based on outstanding intrinsic magnetic properties and on special microstructures. Recently, nanocrystalline intermetallic compounds have been proposed as efficient hard magnetic materials with excellent characteristic properties of the hysteresis loop. Nanocrystalline materials can be used to enhance the remanent magnetization by the exchange coupling between the grains. As an example the upper and lower bounds of the remanence and of the coercive field of a nanocrystalline composite material (Nd2Fe14B + alpha-Fe) are discussed on the basis of finite element calculations. If is shown that nanocrystalline composites of hard and soft (alpha-Fe) phases are promising candidates for future permanent magnetic materials.
引用
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页码:157 / 168
页数:12
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