Shift of geometrically localized magnetic walls in thin films under a magnetic field -: art. no. 184412

被引：4

作者：

García, N ^{[1
]}

Osipov, VV ^{[1
]}

Ponizovskaya, EV ^{[1
]}

机构：

[1] CSIC, Lab Fis Sistemas Pequenos & Nanotecnol, E-28006 Madrid, Spain

来源：

PHYSICAL REVIEW B | 2001年 / 64卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.64.184412

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a theory for the action of magnetic field on magnetic domain walls at constrictions in thin films and show that the wall shifts from the center of the constriction to a controlled distance. where a decrease of the magnetostatic energy compensates for an increase of the surface wall energy. We also find that the walls are fixed by local geometric inhomogeneities and that growth steps on the surface of thin films cause strong coercitive fields. These studies have important consequences in spintronic applications. in particular, for development of high-speed magnetic switches.

引用

页数：4

共 22 条

[1]

Aharoni A., 1998, Introduction to the Theory of Ferromagnetism

[2] GIANT MAGNETORESISTANCE OF (001)FE/(001) CR MAGNETIC SUPERLATTICES [J].

BAIBICH, MN ;

BROTO, JM ;

FERT, A ;

VANDAU, FN ;

PETROFF, F ;

EITENNE, P ;

CREUZET, G ;

FRIEDERICH, A ;

CHAZELAS, J .

PHYSICAL REVIEW LETTERS, 1988, 61 (21) :2472-2475

[3] GIANT MAGNETORESISTANCE IN HETEROGENEOUS CU-CO ALLOYS [J].

BERKOWITZ, AE ;

MITCHELL, JR ;

CAREY, MJ ;

YOUNG, AP ;

ZHANG, S ;

SPADA, FE ;

PARKER, FT ;

HUTTEN, A ;

THOMAS, G .

PHYSICAL REVIEW LETTERS, 1992, 68 (25) :3745-3748

[4] ENHANCED MAGNETORESISTANCE IN LAYERED MAGNETIC-STRUCTURES WITH ANTIFERROMAGNETIC INTERLAYER EXCHANGE [J].

BINASCH, G ;

GRUNBERG, P ;

SAURENBACH, F ;

ZINN, W .

PHYSICAL REVIEW B, 1989, 39 (07) :4828-4830

[5] Geometrically constrained magnetic wall [J].

Bruno, P .

PHYSICAL REVIEW LETTERS, 1999, 83 (12) :2425-2428

[6]

CHIKAZUMI S, 1999, PHYSICS FERROMAGNETI

[7] Negative and positive magnetoresistance manipulation in an electrodeposited nanometer Ni contact [J].

García, N ;

Rohrer, H ;

Saveliev, IG ;

Zhao, YW .

PHYSICAL REVIEW LETTERS, 2000, 85 (14) :3053-3056

[8] Chaotic domain patterns in periodic inhomogeneous magnetic films [J].

García, N ;

Osipov, VV ;

Ponizovskaya, EV ;

del Moral, A .

PHYSICAL REVIEW LETTERS, 2001, 86 (21) :4926-4929

[9] Magnetoresistance in excess of 200% in ballistic Ni nanocontacts at room temperature and 100 Oe [J].

García, N ;

Muñoz, M ;

Zhao, YW .

PHYSICAL REVIEW LETTERS, 1999, 82 (14) :2923-2926

[10] Effects of injection current pulses on magnetic domain switching in stable electrodeposited 10nm Ni contacts [J].

García, N ;

Saveliev, IG ;

Zhao, YW ;

Zlatkine, A .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2000, 214 (1-2) :7-12

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