Strong exchange bias by a single layer of independent antiferromagnetic grains: The CoO/Co model system

被引：97

作者：

Gruyters, M ^{[1
]}

Riegel, D ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW B | 2001年 / 63卷 / 05期

关键词：

D O I：

10.1103/PhysRevB.63.052401

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

CoO/Co bilayers with only 20 Angstrom thin CoO reveal an extremely strong exchange bias characterized by magnetic hysteresis loops of rectangular shape and an ideal dependence on Co layer thickness. Quantitative information on important structural and magnetic parameters are given including the exact lateral size and shape of the fine grains constituting the films and a characteristic temperature dependence of the exchange bias. The high coupling energy originates from a single dense layer of independent antiferromagnetic grains in connection with a large number of uncompensated spins in the CoO.

引用

页数：4

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