Small-angle neutron scattering investigations of magnetic nanostructures and interfaces using polarized neutrons

被引：60

作者：

Wiedenmann, A ^{[1
]}

机构：

[1] Hahn Meitner Inst Berlin GmbH, D-14109 Berlin, Germany

来源：

PHYSICA B-CONDENSED MATTER | 2001年 / 297卷 / 1-4期

关键词：

magnetic nanostructures; polarized neutrons; small-angle neutron scattering;

D O I：

10.1016/S0921-4526(00)00872-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Using polarized neutrons, the relative contrasts for small-angle scattering are strongly modified which allows a precise evaluation of magnetization, density and composition profiles at surfaces and interfaces of nanoscaled materials. in Co ferrofluids, the magnetic core behaves as a non-interacting single domain. The core is encapsulated by a shell of surfactant molecules which was found to be impenetrable for the solvent. In soft magnetic Fe-Si-B-(Nb,Cu) and Fe-Nb-B alloys, the presence of a weak magnetic interface between ferromagnetic nanocrystals and amorphous matrix has been demonstrated which breaks the exchange interactions. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：226 / 233

页数：8

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