Field-flash annealing of Co-rich amorphous alloy

Author

Mitra, A. ; Vazquez, M. ; Hernando, A. ; Gomez-Polo, C.

Author_Institution

Inst. de Magnetismo Aplicado Renfe, Univ. Complutense de Madrid, Spain

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

1415

Lastpage

1417

Abstract

Experimental results are presented on the field-flash annealing of an amorphous alloy of nominal composition Co₇₅Si₁₅B₁₀ made by the melt-spinning technique. Changes of the anisotropy energy, initial susceptibility, and coercive field after field-flash annealing at different intensities were measured. It is concluded that field-flash annealing is a convenient technique for improving the magnetic properties of soft magnetic materials such as amorphous alloys. This treatment relaxes internal stresses and suppresses the induction of transverse anisotropy. An axial magnetic anisotropy can be induced that gives rise to a reduction in coercive field and anisotropy energy and to an increase in initial susceptibility. Modification of the magnetostriction constant proportional to the mentioned parameters was detected after the field-flash annealing

Keywords

annealing; boron alloys; cobalt alloys; coercive force; internal stresses; magnetic anisotropy; magnetic properties of amorphous substances; magnetic susceptibility; magnetostriction; silicon alloys; Co₇₅Si₁₅B₁₀; amorphous alloy; anisotropy energy; axial magnetic anisotropy; coercive field; field-flash annealing; internal stresses; magnetostriction; melt-spinning; susceptibility; Amorphous materials; Anisotropic magnetoresistance; Annealing; Cobalt alloys; Energy measurement; Internal stresses; Magnetic field measurement; Magnetic properties; Silicon alloys; Soft magnetic materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104394

Filename

104394