Effects of thickness on the statistical properties of the Barkhausen noise in amorphous films

被引：26

作者：

Santi, L.

Bohn, F.

Viegas, A. D. C.

Durin, G.

Magni, A.

Bonin, R.

Zapperi, S.

Sommer, R. L. ^{[1
]}

机构：

[1] Ctr Brasileiro Pesquisas Fis, BR-22290180 Rio De Janeiro, Brazil

[2] Univ Fed Santa Maria, Dept Fis, BR-97119900 Santa Maria, RS, Brazil

[3] Ist Elettrot Nazl Galileo Ferraris, Turin, Italy

[4] CNR, Ist Sist Complessi, Rome, Italy

来源：

PHYSICA B-CONDENSED MATTER | 2006年 / 384卷 / 1-2期

关键词：

magnetic domains; thin films; Barkhausen noise;

D O I：

10.1016/j.physb.2006.05.176

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The statistical properties of the Barkhausen noise (BN) in thin amorphous films are studied as a function of both the nominal composition and the thickness. BN was observed in single films with nominal compositions Fe73.5Cu1Nb3Si22.5-xBx (with x = 4 and 9) in the thickness range 20 nm-5 mu m. The distributions of Barkhausen jump sizes and duration times were obtained and fitted to power laws with critical exponents tau = 1.25 +/- 0.05 and alpha = 1.60 +/- 0.05, respectively. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：144 / 146

页数：3

共 5 条

[1]

Bertotti G., 1998, Hysteresis in Magnetism

[2] Magnetostriction in Fe(76.5-x)Cu(1)NbxSi(13.5)B(9) [J].