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

相关论文

共 11 条

[1] DOMAIN-WALL DYNAMICS AND BARKHAUSEN EFFECT IN METALLIC FERROMAGNETIC MATERIALS .1. THEORY [J].

ALESSANDRO, B ;

BEATRICE, C ;

BERTOTTI, G ;

MONTORSI, A .

JOURNAL OF APPLIED PHYSICS, 1990, 68 (06) :2901-2907

[2] SELF-ORGANIZED CRITICALITY - AN EXPLANATION OF 1/F NOISE [J].

BAK, P ;

TANG, C ;

WIESENFELD, K .

PHYSICAL REVIEW LETTERS, 1987, 59 (04) :381-384

[3] FRACTALS, SCALING AND THE QUESTION OF SELF-ORGANIZED CRITICALITY IN MAGNETIZATION PROCESSES [J].

DURIN, G ;

BERTOTTI, G ;

MAGNI, A .

FRACTALS-COMPLEX GEOMETRY PATTERNS AND SCALING IN NATURE AND SOCIETY, 1995, 3 (02) :351-370

[4]

ERTAS D, 1994, PHYS REV E, V49, pR2535

[5] FREQUENCY-SPECTRUM OF BARKHAUSEN NOISE OF A MOVING 180DEGREES DOMAIN-WALL [J].

GROSSENOBIS, W .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1977, 4 (1-4) :247-253

[6]

LESCHHORN H, IN PRESS ANN PHYS

[7] CRITICAL PHENOMENA IN FLUID INVASION OF POROUS-MEDIA [J].

MARTYS, N ;

CIEPLAK, M ;

ROBBINS, MO .

PHYSICAL REVIEW LETTERS, 1991, 66 (08) :1058-1061

[8] CRITICAL-BEHAVIOR OF SLIDING CHARGE-DENSITY WAVES IN 4-EPSILON DIMENSIONS [J].

NARAYAN, O ;

FISHER, DS .

PHYSICAL REVIEW B, 1992, 46 (18) :11520-11549

[9] THRESHOLD CRITICAL-DYNAMICS OF DRIVEN INTERFACES IN RANDOM-MEDIA [J].

NARAYAN, O ;

FISHER, DS .

PHYSICAL REVIEW B, 1993, 48 (10) :7030-7042

[10] STATISTICAL CHARACTERIZATION OF BARKHAUSEN NOISE [J].

OBRIEN, KP ;

WEISSMAN, MB .

PHYSICAL REVIEW E, 1994, 50 (05) :3446-3452