Controlling the exchange interaction using the spin-flip transition of antiferromagnetic spins in Ni81Fe19/α-Fe2O3 -: art. no. 10K101

被引：6

作者：

Dho, J ^{[1
]}

Leung, CW ^{[1
]}

Barber, ZH ^{[1
]}

Blamire, MG ^{[1
]}

机构：

[1] Univ Cambridge, Dept Mat Sci & Met, Cambridge CB2 3QZ, England

来源：

JOURNAL OF APPLIED PHYSICS | 2005年 / 97卷 / 10期

关键词：

D O I：

10.1063/1.1846191

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied exchange bias and coercivity in ferromagnetic (FM) Ni81Fe19 layers coupled with antiferromagnetic (AF) (0001), (11 (2) over bar0), and (1 (1) over bar 02) alpha-Fe2O3 layers. We show that the exchange interaction between FM and AF layers is controllable by a magnetic-field annealing (MFA) through a spin reorientation temperature of an AF material, similar to a MFA through a Neel temperature in normal exchange-biased systems. For (11 (2) over bar0) and (1 (1) over bar 02) alpha-Fe2O3, the temperature-dependent exchange bias displayed a sudden increase below a spin-flip temperature of alpha-Fe2O3 (T-m) and the coercivity showed a clear variation near T-m. (c) 2005 American Institute of Physics.

引用

页数：3

共 29 条

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