Numerical simulation of magnetization process in antiferromagnetic-ferromagnetic bilayer with compensated interface

被引：11

作者：

Usov, NA ^{[1
]}

Gudoshnikov, SA

机构：

[1] Troitsk Inst Innovat & Fus Res, Troitsk 142190, Moscow Region, Russia

[2] RAS, Inst Terr Magnetism Ionosphere & Radiowave Propag, IZMIRAN, Troitsk 142190, Moscow Region, Russia

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2006年 / 300卷 / 01期

关键词：

exchange bias; antiferromagnetic-ferromagnetic bilayer; numerical simulation;

D O I：

10.1016/j.jmmm.2005.10.056

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The properties of antiferromagnetic (AFM)-ferromagnetic (FM) bilayer have been studied using self-consistent mean-field approximation for Heisenberg Hamiltonian. The perpendicular exchange coupling has been revealed in a bilayer with a compensated interface. For a uniform AFM film a symmetrical hysteresis loop has been calculated, because the transverse instability develops within the AFM film at certain critical value of external magnetic field. On the other hand, shifted hysteresis loop with a finite exchange bias field has been obtained for a non-uniform AFM film consisting of various AFM domains with perpendicular directions of the easy anisotropy axes. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：164 / 169

页数：6

共 16 条

[1] Exchange anisotropy - a review [J].

Berkowitz, AE ;

Takano, K .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :552-570

[2]

Brown WF., 1962, MAGNETOSTATIC PRINCI

[3] Role of the antiferromagnet in exchange-biased Fe3O4/CoO superlattices [J].

Ijiri, Y ;

Borchers, JA ;

Erwin, RW ;

Lee, SH ;

van der Zaag, PJ ;

Wolf, RM .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (11) :6882-6887

[4] Perpendicular coupling in exchange-biased Fe3O4/CoO superlattices [J].

Ijiri, Y ;

Borchers, JA ;

Erwin, RW ;

Lee, SH ;

van der Zaag, PJ ;

Wolf, RM .

PHYSICAL REVIEW LETTERS, 1998, 80 (03) :608-611

[5] Exchange bias theory [J].

Kiwi, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2001, 234 (03) :584-595

[6] Calculations of exchange bias in thin films with ferromagnetic/antiferromagnetic interfaces [J].

Koon, NC .

PHYSICAL REVIEW LETTERS, 1997, 78 (25) :4865-4868

[7] Two-stage magnetization reversal in exchange biased bilayers [J].

Leighton, C ;

Fitzsimmons, MR ;

Yashar, P ;

Hoffmann, A ;

Nogués, J ;

Dura, J ;

Majkrzak, CF ;

Schuller, IK .

PHYSICAL REVIEW LETTERS, 2001, 86 (19) :4394-4397

[8] RANDOM-FIELD MODEL OF EXCHANGE-ANISOTROPY AT ROUGH FERROMAGNETIC-ANTIFERROMAGNETIC INTERFACES [J].

MALOZEMOFF, AP .

PHYSICAL REVIEW B, 1987, 35 (07) :3679-3682

[9] SIMPLE-MODEL FOR THIN FERROMAGNETIC-FILMS EXCHANGE COUPLED TO AN ANTIFERROMAGNETIC SUBSTRATE [J].

MAURI, D ;

SIEGMANN, HC ;

BAGUS, PS ;

KAY, E .

JOURNAL OF APPLIED PHYSICS, 1987, 62 (07) :3047-3049

[10] NEW MAGNETIC ANISOTROPY [J].

MEIKLEJOHN, WH ;

BEAN, CP .

PHYSICAL REVIEW, 1956, 102 (05) :1413-1414

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