Magnetic coupling between the different phases in nanocrystalline Fe-Si-B studied by small angle neutron scattering

被引：42

作者：

Kohlbrecher, J ^{[1
]}

Wiedenmann, A ^{[1
]}

Wollenberger, H ^{[1
]}

机构：

[1] HAHN MEITNER INST BERLIN GMBH, D-14109 BERLIN, GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1997年 / 104卷 / 01期

关键词：

D O I：

10.1007/s002570050411

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The magnetic coupling in the two-phase nanostructure of Fe73.5Si15.5B7Nb3Cu1 has been investigated by SANS technique. The scattering function for partially aligned magnetic moments of ferromagnetic single domain particles following the Langevin statistics of superparamagnetism has been derived which describes the field and temperature dependency of the SANS profiles. Above the Curie temperature of the amorphous phase T-c(am) the nanocrystals show superparamagnetic scattering behaviour whereas below T-c(am) they interact by magnetostatic forces only and not by exchange coupling via the amorphous matrix.

引用

页码：1 / 4

页数：4

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