Periodic magnetic domain wall pinning in an ultrathin film with perpendicular anisotropy generated by the stray magnetic field of a ferromagnetic nanodot array

被引：26

作者：

Metaxas, P. J. ^{[1
,2
]}

Zermatten, P. -J.

Jamet, J. -P. ^{[1
]}

Ferre, J. ^{[1
]}

Gaudin, G. ^{[3
]}

Rodmacq, B. ^{[3
]}

Schuhl, A. ^{[3
]}

Stamps, R. L. ^{[2
]}

机构：

[1] Univ Paris 11, CNRS, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

[2] Univ Western Australia, Sch Phys, Crawley, WA 6009, Australia

[3] CEA Grenoble, CNRS, URA 2512, SPINTEC, F-38054 Grenoble, France

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 13期

关键词：

cobalt; ferromagnetic materials; magnetic domain walls; magnetic multilayers; magnetic thin films; nanostructured materials; permanent magnets; perpendicular magnetic anisotropy; platinum; CREEP; MEDIA;

D O I：

10.1063/1.3105988

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The stray magnetic field of an array of hard ferromagnetic perpendicularly magnetized [Co/Pt](4) nanodots is used to nondestructively generate a periodic pinning potential for domain walls in an underlying [Pt/Co](2)/Pt layer with perpendicular anisotropy. Pinning is evidenced using magneto-optical microscopy. The magnetic field (H) dependence of the average wall velocity in the presence of the periodic pinning potential is consistent with thermally activated creep, modified only by the addition of a uniform retarding field H(ret), whose magnitude depends on the relative alignment of H and the dots' magnetizations.

引用

页数：3

共 20 条

[1] Domain wall creep in magnetic wires -: art. no. 107202 [J].