Creep and flow regimes of magnetic domain-wall motion in ultrathin Pt/Co/Pt films with perpendicular anisotropy

被引：527

作者：

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

Jamet, J. P.

Mougin, A.

Cormier, M.

Ferre, J.

Baltz, V.

Rodmacq, B.

Dieny, B.

Stamps, R. L.

机构：

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

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

[3] CEA Grenoble, CEA 2512, CNRS, URA,SPINTEC, F-38054 Grenoble 9, France

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 99卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.99.217208

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report on magnetic domain-wall velocity measurements in ultrathin Pt/Co(0.5-0.8 nm)/Pt films with perpendicular anisotropy over a large range of applied magnetic fields. The complete velocity-field characteristics are obtained, enabling an examination of the transition between thermally activated creep and viscous flow: motion regimes predicted from general theories for driven elastic interfaces in weakly disordered media. The dissipation limited flow regime is found to be consistent with precessional domain-wall motion, analysis of which yields values for the damping parameter, alpha.

引用

页数：4

共 35 条

[1] Minimum field strength in precessional magnetization reversal [J].

Back, CH ;

Allenspach, R ;

Weber, W ;

Parkin, SSP ;

Weller, D ;

Garwin, EL ;

Siegmann, HC .

SCIENCE, 1999, 285 (5429) :864-867

[2] Ultrashort magnetic field pulses and the elementary process of magnetization reversal [J].

Back, CH ;

Siegmann, HC .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 200 (1-3) :774-785

[3]

BARMAN A, 2007, J APPL PHYS, V10

[4] Dynamics of field-driven domain-wall propagation in ferromagnetic nanowires [J].

Beach, GSD ;

Nistor, C ;

Knutson, C ;

Tsoi, M ;

Erskine, JL .

NATURE MATERIALS, 2005, 4 (10) :741-744

[5] VORTICES IN HIGH-TEMPERATURE SUPERCONDUCTORS [J].

BLATTER, G ;

FEIGELMAN, MV ;

GESHKENBEIN, VB ;

LARKIN, AI ;

VINOKUR, VM .

REVIEWS OF MODERN PHYSICS, 1994, 66 (04) :1125-1388

[6] Pinning and sliding of driven elastic systems: from domain walls to charge density waves [J].

Brazovskii, S ;

Nattermann, T .

ADVANCES IN PHYSICS, 2004, 53 (02) :177-252

[7]

BRUNO P, 1992, MATER RES SOC SYMP P, V231, P299, DOI 10.1557/PROC-231-299

[8] Creep and depinning in disordered media [J].

Chauve, P ;

Giamarchi, T ;

Le Doussal, P .

PHYSICAL REVIEW B, 2000, 62 (10) :6241-6267

[9] Domain wall relaxation, creep, sliding, and switching in superferromagnetic discontinuous Co80Fe20/Al2O3 multilayers -: art. no. 137203 [J].

Chen, X ;

Sichelschmidt, O ;

Kleemann, W ;

Petracic, O ;

Binek, C ;

Sousa, JB ;

Cardoso, S ;

Freitas, PP .

PHYSICAL REVIEW LETTERS, 2002, 89 (13)

[10] WETTING - STATICS AND DYNAMICS [J].

DEGENNES, PG .

REVIEWS OF MODERN PHYSICS, 1985, 57 (03) :827-863

← 1 2 3 4 →