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
收藏
页码：228 / 230
页数：3
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