Effects of magnetic field annealing on magnetic properties in ultrafine crystalline Fe-Cu-Nb-Si-B alloys

Author

Yoshizawa, Y. ; Yamauchi, K.

Author_Institution

Hitachi Metals Ltd., Saitama, Japan

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

3324

Lastpage

3326

Abstract

The relation between magnetic field annealing and magnetic properties in Fe-based alloys called FINEMET, composed of an ultrafine grain structure, have been studied. High-remanence-ratio B-H curves and flat B-H curves can be obtained by longitudinal-field and transverse-field annealing, respectively. The values of core loss and relative permeability of FINEMET alloys annealed in a magnetic field are similar to those of Co-based alloys, and they show excellent soft magnetic properties in the high-frequency range. The alloys annealed in longitudinal fields are suitable for saturable reactors and high-frequency transformers, and those annealed in transverse fields are suitable for choke coils

Keywords

boron alloys; copper alloys; iron alloys; magnetic annealing; magnetic properties of fine particles; niobium alloys; silicon alloys; B-H curves; FINEMET; Fe-Cu-Nb-Si-B alloys; choke coils cores; core loss; high frequency transformer cores; high-frequency range; longitudinal field annealing; magnetic field annealing; magnetic properties; relative permeability; saturable reactor cores; soft magnetic properties; transverse-field annealing; ultrafine grain structure; Amorphous materials; Annealing; Conductivity; Core loss; Crystallization; Frequency dependence; Magnetic properties; Permeability; Remanence; Soft magnetic materials;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42291

Filename

42291