Self-similar Barkhausen noise in magnetic domain wall motion

被引：49
|
作者：
Narayan, O
机构：
[1] University of California at Santa Cruz, Santa Cruz, CA
来源：
PHYSICAL REVIEW LETTERS | 1996年 / 77卷 / 18期
关键词：
D O I：
10.1103/PhysRevLett.77.3855
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A model for domain wall motion in ferromagnets is analyzed. Long-range magnetic dipolar interactions are shown to give rise to self-similar dynamics when the external magnetic field is increased adiabatically. The power spectrum of the resultant Barkhausen noise is of the form 1/omega(alpha), where alpha approximate to 1.5 can be estimated from the critical exponents for interface depinning in random media.
引用
收藏
页码：3855 / 3857
页数：3
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