Magnetic domain wall dynamics in a permalloy nanowire

被引：34

作者：

Atkinson, D ^{[1
]}

Allwood, DA ^{[1
]}

Faulkner, CC ^{[1
]}

Xiong, G ^{[1
]}

Cooke, MD ^{[1
]}

Cowburn, RP ^{[1
]}

机构：

[1] Univ Durham, Dept Phys, Durham DH1 3HP, England

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2003年 / 39卷 / 05期

关键词：

domain walls; magnetic nanostructure; permalloy; thermal activation;

D O I：

10.1109/TMAG.2003.815548

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Experimental results of domain wall propagation velocity as a function of applied field in a 200-nm-wide permalloy nanostructure are presented. The structure was fabricated by focused-ion beam milling and designed to separate the domain wall nucleation from propagation. The measured velocities are very high, tip to 1500 m/s at 49 Oe and the field dependence of the velocity is interpreted in terms of thermally activated wall motion through a series of pinning sites and a wall geometry that changes as a function of field.

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收藏

页码：2663 / 2665

页数：3

相关论文

共 20 条

[1] Submicrometer ferromagnetic NOT gate and shift register [J].

Allwood, DA ;

Xiong, G ;

Cooke, MD ;

Faulkner, CC ;

Atkinson, D ;

Vernier, N ;

Cowburn, RP .

SCIENCE, 2002, 296 (5575) :2003-2006

[2] Nanosecond pulsed field magnetization reversal in thin-film NiFe studied by Kerr effect magnetometry [J].

Atkinson, D ;

Allwood, DA ;

Cooke, MD ;

Cowburn, RP .

JOURNAL OF PHYSICS D-APPLIED PHYSICS, 2001, 34 (20) :3019-3023

[3]

ATKINSON D, 2003, NATURE MAT, V85

[4] Probing submicron nanomagnets by magneto-optics [J].

Cowburn, RP ;

Koltsov, DK ;

Adeyeye, AO ;

Welland, ME .

APPLIED PHYSICS LETTERS, 1998, 73 (26) :3947-3949

[5] Spin accumulation and domain wall magnetoresistance in 35 nm Co wires [J].

Ebels, U ;

Radulescu, A ;

Henry, Y ;

Piraux, L ;

Ounadjela, K .

PHYSICAL REVIEW LETTERS, 2000, 84 (05) :983-986

[6] Ultrafast precessional magnetization reversal by picosecond magnetic field pulse shaping [J].

Gerrits, T ;

van den Berg, HAM ;

Hohlfeld, J ;

Bär, L ;

Rasing, T .

NATURE, 2002, 418 (6897) :509-512

[7] Giant enhancement of the domain wall velocity in irradiated ultrathin magnetic nanowires [J].

Jamet, JP ;

Ferré, J ;

Meyer, P ;

Gierak, J ;

Vieu, C ;

Rousseaux, F ;

Chappert, C ;

Mathet, V .

IEEE TRANSACTIONS ON MAGNETICS, 2001, 37 (04) :2120-2122

[8] Magnetization reversal in ultrathin ferromagnetic films with perpendicular anisotropy [J].

Kirilyuk, A ;

Ferre, J ;

Grolier, V ;

Jamet, JP ;

Renard, D .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1997, 171 (1-2) :45-63

[9] MEASUREMENT OF THE DYNAMICS OF THE MAGNETIZATION REVERSAL IN INDIVIDUAL SINGLE-DOMAIN FERROMAGNETIC PARTICLES [J].

LEDERMAN, M ;

SCHULTZ, S ;

OZAKI, M .

PHYSICAL REVIEW LETTERS, 1994, 73 (14) :1986-1989

[10]

Malozemoff A. P., 1979, MAGNETIC DOMAIN WALL