Suppression of exchange bias by ion irradiation

被引：98

作者：

Mewes, T ^{[1
]}

Lopusnik, R ^{[1
]}

Fassbender, J ^{[1
]}

Hillebrands, B ^{[1
]}

Jung, M ^{[1
]}

Engel, D ^{[1
]}

Ehresmann, A ^{[1
]}

Schmoranzer, H ^{[1
]}

机构：

[1] Univ Kaiserslautern, Fchbereich Phys & Forsch & Entwicklungsschwerpunk, D-67663 Kaiserslautern, Germany

来源：

APPLIED PHYSICS LETTERS | 2000年 / 76卷 / 08期

关键词：

D O I：

10.1063/1.125937

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The exchange bias effect in ferromagnetic/antiferromagnetic sandwich structures is generally believed to be sensitive on the interface exchange interaction, the magnetization, and the thickness of the ferromagnetic layer. Also the interface structure plays a crucial role. We show that, by irradiating samples with He ions, we can manipulate the exchange bias field in a controlled manner. Depending on the dose (10(14)-10(17) ions/cm(2)) and the acceleration voltage (10-35 kV) of the ions, the shift of the hysteresis can be reduced or even fully suppressed. Potential applications of this effect for magnetic patterning on the nanoscale will be discussed. (C) 2000 American Institute of Physics. [S0003-6951(00)03608-1].

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页码：1057 / 1059

页数：3

相关论文

共 16 条

[1] Magnetization reversal in arrays of perpendicularly magnetized ultrathin dots coupled by dipolar interaction [J].

Aign, T ;

Meyer, P ;

Lemerle, S ;

Jamet, JP ;

Ferré, J ;

Mathet, V ;

Chappert, C ;

Gierak, J ;

Vieu, C ;

Rousseaux, F ;

Launois, H ;

Bernas, H .

PHYSICAL REVIEW LETTERS, 1998, 81 (25) :5656-5659

[2] MeV ion irradiation of Co/Cu multilayers [J].

Cai, M ;

Veres, T ;

Roorda, S ;

Cochrane, RW ;

Abdouche, R ;

Sutton, M .

JOURNAL OF APPLIED PHYSICS, 1997, 81 (08) :5200-5202

[3] Planar patterned magnetic media obtained by ion irradiation [J].

Chappert, C ;

Bernas, H ;

Ferré, J ;

Kottler, V ;

Jamet, JP ;

Chen, Y ;

Cambril, E ;

Devolder, T ;

Rousseaux, F ;

Mathet, V ;

Launois, H .

SCIENCE, 1998, 280 (5371) :1919-1922

[4] Sub-50 nm planar magnetic nanostructures fabricated by ion irradiation [J].

Devolder, T ;

Chappert, C ;

Chen, Y ;

Cambril, E ;

Bernas, H ;

Jamet, JP ;

Ferré, J .

APPLIED PHYSICS LETTERS, 1999, 74 (22) :3383-3385

[5]

Geiger J., 1978, Electron Microscopy 1978. Ninth International Congress on Electron Microscopy, P4

[6] UNIDIRECTIONAL ANISOTROPY IN NICKEL-IRON FILMS BY EXCHANGE COUPLING WITH ANTI-FERROMAGNETIC FILMS [J].

HEMPSTEAD, RD ;

KRONGELB, S ;

THOMPSON, DA .

IEEE TRANSACTIONS ON MAGNETICS, 1978, 14 (05) :521-523

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

Koon, NC .

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

[8] Exchange anisotropy and the antiferromagnetic surface order parameter [J].

Lederman, D ;

Nogues, J ;

Schuller, IK .

PHYSICAL REVIEW B, 1997, 56 (05) :2332-2335

[9] MECHANISMS OF EXCHANGE-ANISOTROPY [J].

MALOZEMOFF, AP .

JOURNAL OF APPLIED PHYSICS, 1988, 63 (08) :3874-3879

[10] 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