Defect-modified exchange bias

被引:42
作者
Kim, JV [1 ]
Stamps, RL [1 ]
机构
[1] Univ Western Australia, Dept Phys, Crawley, WA 6009, Australia
关键词
D O I
10.1063/1.1413731
中图分类号
O59 [应用物理学];
学科分类号
摘要
The influence of local defects in exchange biased ferromagnetic/antiferromagnetic bilayers is studied using numerical simulations. The location of defects relative to the interface is found to be the main factor determining the magnitude of coercive and bias field modifications. One consequence is that some types of defects control stability of partial wall structures. This may explain coercivity enhancement as arising from irreversible pinning of partial domain walls in the antiferromagnet. (C) 2001 American Institute of Physics.
引用
收藏
页码:2785 / 2787
页数:3
相关论文
共 24 条
[1]   Exchange anisotropy - a review [J].
Berkowitz, AE ;
Takano, K .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :552-570
[2]   MAGNETIC SURFACE ANISOTROPY OF COBALT AND SURFACE-ROUGHNESS EFFECTS WITHIN NEEL MODEL [J].
BRUNO, P .
JOURNAL OF PHYSICS F-METAL PHYSICS, 1988, 18 (06) :1291-1298
[3]   Structural origin of coercivity enhancement and exchange-bias field in double antiferromagnet/ferromagnet bilayers [J].
Hou, C ;
Fujiwara, H ;
Zhang, K .
APPLIED PHYSICS LETTERS, 2000, 76 (26) :3974-3976
[4]   Angular dependence and interfacial roughness in exchange-biased ferromagnetic/antiferromagnetic bilayers [J].
Kim, JV ;
Stamps, RL ;
McGrath, BV ;
Camley, RE .
PHYSICAL REVIEW B, 2000, 61 (13) :8888-8894
[5]   Exchange bias model for Fe/FeF2:: Role of domains in the ferromagnet [J].
Kiwi, M ;
Mejía-López, J ;
Portugal, RD ;
Ramírez, R .
EUROPHYSICS LETTERS, 1999, 48 (05) :573-579
[6]   Exchange-bias systems with compensated interfaces [J].
Kiwi, M ;
Mejía-López, J ;
Portugal, RD ;
Ramírez, R .
APPLIED PHYSICS LETTERS, 1999, 75 (25) :3995-3997
[7]   Calculations of exchange bias in thin films with ferromagnetic/antiferromagnetic interfaces [J].
Koon, NC .
PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4865-4868
[8]   MAGNETIC-ANISOTROPY IN EPITAXIAL CO SUPERLATTICES [J].
LEE, CH ;
HE, H ;
LAMELAS, FJ ;
VAVRA, W ;
UHER, C ;
CLARKE, R .
PHYSICAL REVIEW B, 1990, 42 (01) :1066-1069
[9]   Coercivity enhancement in exchange biased systems driven by interfacial magnetic frustration [J].
Leighton, C ;
Nogués, J ;
Jönsson-Åkerman, BJ ;
Schuller, IK .
PHYSICAL REVIEW LETTERS, 2000, 84 (15) :3466-3469
[10]   RANDOM-FIELD MODEL OF EXCHANGE-ANISOTROPY AT ROUGH FERROMAGNETIC-ANTIFERROMAGNETIC INTERFACES [J].
MALOZEMOFF, AP .
PHYSICAL REVIEW B, 1987, 35 (07) :3679-3682