On the evolution of domain walls in hard ferromagnets

被引：15

作者：

Podio-Guidugli, P ^{[1
]}

Tomassetti, G ^{[1
]}

机构：

[1] Univ Roma Tor Vergata, Dipartimento Ingn Civile, I-00133 Rome, Italy

来源：

SIAM JOURNAL ON APPLIED MATHEMATICS | 2004年 / 64卷 / 06期

关键词：

micromagnetics; domain walls; matched asymptotic expansions; motion by curvature;

D O I：

10.1137/S003613990343402X

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

We propose a sharp-interface theory for the dynamics of domain walls in highly anisotropic ("hard") ferromagnetic bodies. Starting from the Gilbert equation, we consider the asymptotic regime when the hardness parameter goes to infinity, and we use the technique of matched expansions to derive a system of two evolution equations for the domain wall, regarded as a smooth surface. The first equation, apart for a nonlocal forcing term, has the standard form for a surface set in motion according to its mean curvature. The second relates the normal velocity to the internal structure of the domain wall.

引用

页码：1887 / 1906

页数：20

共 50 条

[21] DYNAMICS OF DOMAIN-WALLS IN ELASTIC FERROMAGNETS AND FERROELECTRICS
KIVSHAR, YS
MALOMED, BA
PHYSICAL REVIEW B, 1990, 42 (13) : 8561 - 8570
[22] Barkhausen avalanches in anisotropic ferromagnets with 180° domain walls
Tadic, B
Nowak, U
PHYSICAL REVIEW E, 2000, 61 (04): : 4610 - 4613
[23] Universal depinning transition of domain walls in ultrathin ferromagnets
Pardo, R. Diaz
Torres, W. Savero
Kolton, A. B.
Bustingorry, S.
Jeudy, V.
PHYSICAL REVIEW B, 2017, 95 (18)
[24] RADIATION HINDRANCE OF NARROW DOMAIN WALLS IN FERROMAGNETS.
Minakov, V.I.
Fedosov, V.N.
Physics of Metals and Metallography, 1980, 50 (04): : 197 - 199
[25] EFFECTIVE EQUATIONS OF MOTION OF DOMAIN-WALLS IN FERROMAGNETS
BOROVIK, AE
KULESHOV, VS
STRZHEMECHNYI, MA
ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI, 1975, 68 (06): : 2236 - 2248
[26] Phenomenological theory of superconductivity near domain walls in ferromagnets
Samokhin, KV
Shirokoff, D
PHYSICAL REVIEW B, 2005, 71 (10):
[27] DOMAIN-WALLS IN FERROMAGNETS AND FERRIMAGNETS WITH STRONG ANISOTROPY
MITSEK, AI
GUSLIYENKO, KY
FIZIKA METALLOV I METALLOVEDENIE, 1982, 53 (06): : 1044 - 1050
[28] SYMMETRY AND DYNAMICS OF DOMAIN-WALLS IN WEAK FERROMAGNETS
GOMONAI, EV
IVANOV, BA
LVOV, VA
OKSYUK, GK
ZHURNAL EKSPERIMENTALNOI I TEORETICHESKOI FIZIKI, 1990, 97 (01): : 307 - 322
[29] The nature of domain walls in ultrathin ferromagnets revealed by scanning nanomagnetometry
Tetienne, J. -P.
Hingant, T.
Martinez, L. J.
Rohart, S.
Thiaville, A.
Diez, L. Herrera
Garcia, K.
Adam, J. -P.
Kim, J. -V.
Roch, J. -F.
Miron, I. M.
Gaudin, G.
Vila, L.
Ocker, B.
Ravelosona, D.
Jacques, V.
NATURE COMMUNICATIONS, 2015, 6
[30] Chirality tunneling and quantum dynamics for domain walls in mesoscopic ferromagnets
Galkina, E. G.
Ivanov, B. A.
Savel'ev, Sergey
Nori, Franco
PHYSICAL REVIEW B, 2008, 77 (13)

← 1 2 3 4 5 →