High interfacial exchange energy in TbFeCo exchange-bias films

被引：21

作者：

Lin, CC ^{[1
]}

Lai, CH

Jiang, RF

Shieh, HPD

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan

[2] Natl Chiao Tung Univ, Inst Electroopt Engn, Hsinchu 300, Taiwan

来源：

JOURNAL OF APPLIED PHYSICS | 2003年 / 93卷 / 10期

关键词：

D O I：

10.1063/1.1556932

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The exchange-bias films of ferrimagnetic/ferrimagnetic, ferromagnetic/ferromagnetic, and ferromagnetic/antiferromagnetic bilayers were fabricated to investigate their interfacial exchange energy Deltasigma. Deltasigma of TbFeCo bilayers is larger than 5 erg/cm(2) at room temperature. By varying the composition of TbFeCo layers, both positive and negative exchange bias have been observed. A highly uncompensated-spin interface model was proposed to explain the strong exchange interaction in TbFeCo bilayers. Due to the characteristics of highly uncompensated-spin interface at TbFeCo bilayers, the exchange coupling field in TbFeCo bilayers exhibited less dependence on interfacial roughness than that in IrMn/NiFe bilayers. In addition, by adjusting the composition of TbFeCo, the anisotropy of pinning layer can be manipulated and exhibits strong effects on exchange bias of TbFeCo bilayers. (C) 2003 American Institute of Physics.

引用

页码：6832 / 6834

页数：3

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