Magnetic properties of Co-M-C (M=Zr, Hf, Ta) films

Author

Suwabe, S. ; Tsuneda, F. ; Nishiyama, T.

Author_Institution

Hitachi Metals Ltd., Saitama, Japan

Volume

28

Issue

5

fYear

1992

fDate

9/1/1992 12:00:00 AM

Firstpage

2949

Lastpage

2951

Abstract

The magnetic properties of sputtered Co-M-C (M=Zr, Hf, Ta) films for MIG (metal-in-gap) head applications have been investigated. The Co-Hf-C films had a relatively higher thermal stability of the soft magnetic properties than the other films. After annealing at 700°C, the Co-Hf-C films have high μ(>2000), low H_c(<40 A/m), and high B _s(1.3~1.45 T). Furthermore, they have higher corrosion resistance than Fe-Ta-C nanocrystalline films. It is concluded that Co- M-C films are suitable for use in high-performance magnetic heads

Keywords

annealing; cobalt alloys; coercive force; ferromagnetic properties of substances; hafnium alloys; magnetic heads; magnetic permeability; magnetic thin films; sputtered coatings; tantalum alloys; zirconium alloys; Co-Hf-C films; Co-Ta-C films; Co-Zr-C films; annealing; coercivity; corrosion resistance; high-performance magnetic heads; magnetic films; metal-in-gap heads; permeability; saturation flux density; soft magnetic properties; sputtered; thermal stability; Annealing; Corrosion; Ferrite films; Hafnium; Magnetic field measurement; Magnetic films; Magnetic properties; Permeability; Temperature; Thermal stability;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.179682

Filename

179682