Low frequency magnetic response in antiferromagnetically coupled Fe/Cr multilayers

被引：6

作者：

Aliev, FG

Martinez, JL

Moshchalkov, VV

Bruynseraede, Y

Levanyuk, AP

Villar, R

机构：

[1] Univ Autonoma Madrid, Inst Ciencia Mat Nicolas Cabrera, E-28049 Madrid, Spain

[2] Univ Autonoma Madrid, Dept Fis Mat Condensada, E-28049 Madrid, Spain

[3] CSIC, Inst Ciencia Mat Madrid, E-28049 Madrid, Spain

[4] Katholieke Univ Leuven, Lab Vaste Stoffys & Magnetisme, B-3001 Heverlee, Belgium

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 88卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.88.187201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic field and temperature dependence of the low frequency magnetic response of antiferromagnetically coupled Fe/Cr(100) multilayers has been studied between +/-500 Oe , from 2 to 300 K . At T = 2 K the losses exhibit an unusually strong frequency dependence which can be described within a single relaxation time scheme. This relaxation time proves to be strongly field dependent. These phenomena are specific for epitaxial multilayers with large magnetoresistance. The behavior of the relaxation time at low temperatures might be related to some quantum tunneling processes.

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收藏

页码：1872011 / 1872014

页数：4

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