Large Barkhausen jumps in relaxed Co-rich amorphous alloy ribbons

Author

Blanco, J.M. ; Domínguez, L. ; Aragonéses, P. ; Gonzalez, Jose

Author_Institution

Dept. de Fisica Aplicada, Pais Vasco Univ., San Sebastian, Spain

Volume

33

Issue

5

fYear

1997

fDate

9/1/1997 12:00:00 AM

Firstpage

3778

Lastpage

3780

Abstract

The effect of a previous thermal treatment (370°C, 30 minutes) on the occurrence of a large Barkhausen jump (LBJ) present in the magnetization process of two Co-rich amorphous ribbons treated by means of current annealing has been studied. The LBJ is characterized by an applied magnetic field called the critical field, H*. The stress dependence of H* and reduced remanence, m_r allows one to analyze the nature of the LBJ effect which is strongly linked to the magnetoelastic anisotropy arising from the tensile stress (internal or applied) in the ribbons

Keywords

Barkhausen effect; amorphous magnetic materials; boron alloys; cobalt alloys; ferromagnetic materials; heat treatment; internal stresses; iron alloys; magnetoelastic effects; metallic glasses; remanence; silicon alloys; 30 min; 370 C; CoFeSiB; LBJ effect; applied magnetic field; critical field; current annealing; large Barkhausen jumps; magnetization process; magnetoelastic anisotropy; relaxed Co-rich amorphous alloy ribbons; remanence; stress dependence; tensile stress; thermal treatment; Amorphous magnetic materials; Amorphous materials; Annealing; Internal stresses; Magnetic analysis; Magnetic anisotropy; Magnetization processes; Remanence; Tensile stress; Thermal stresses;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.619569

Filename

619569