Effect of Dipolar Interactions for Domain-Wall Dynamics in Magnetic Thin Films

被引：14

作者：

Mughal, Adil ^{[1
]}

Laurson, Lasse ^{[1
]}

Durin, Gianfranco ^{[1
,3
]}

Zapperi, Stefano ^{[1
,2
]}

机构：

[1] ISI Fdn, I-10133 Turin, Italy

[2] Univ Modena & Reggio Emilia, Dipartimento Fis, INFM CNR, I-41100 Modena, Italy

[3] INRiM, I-10135 Turin, Italy

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2010年 / 46卷 / 02期

基金：

芬兰科学院;

关键词：

Dipolar interactions; domain-wall dynamics; magnetic thin films; BARKHAUSEN; CRITICALITY; TRANSITION; AVALANCHES; BEHAVIOR;

D O I：

10.1109/TMAG.2009.2033552

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：

We study the effect of long-range dipolar forces on the dynamics and morphology of domain walls in magnetic thin films by numerical simulations of the spin-1 random-field Ising model. By studying the size distribution of avalanches of domain-wall motion arising as a response to quasistatic external driving, we observe a crossover from the case dominated by short-range interactions to another universality class where the long-range dipolar forces become important. This crossover is accompanied with a change of the domain-wall morphology from a rough wall to walls with a zigzag structure.

引用

页码：228 / 230

页数：3

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