EXCHANGE INTERACTIONS THROUGH AMORPHOUS PARAMAGNETIC LAYERS IN FERROMAGNETIC NANOCRYSTALS

被引：204

作者：

HERNANDO, A ^{[1
]}

KULIK, T ^{[1
]}

机构：

[1] UNIV CAMBRIDGE, DEPT MAT SCI, CAMBRIDGE CB2 3QZ, ENGLAND

来源：

PHYSICAL REVIEW B | 1994年 / 49卷 / 10期

关键词：

D O I：

10.1103/PhysRevB.49.7064

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Exchange interactions between ferromagnetic layers through paramagnetic spacers have been widely observed and studied in thin multilayers. In this paper we report an experimental analysis of the exchange correlation length in soft ferromapetic nanocrystals. It has been observed that for an average distance between crystallites below 5 nm they are coupled by exchange interactions even above the Curie temperature of the amorphous matrix. The experiment indicates that exchange can propagate through noncrystalline paramagnetic layers. An estimation of the exchange strength has been made.

引用

页码：7064 / 7067

页数：4

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