Soft magnetic properties of Co-Fe-P and Co-Fe-Sn-P amorphous films formed by electroplating

Author

Hironaka, K. ; Uedaira, S.

Author_Institution

Sony Corp. Res. Center, Yokohama, Japan

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2421

Lastpage

2423

Abstract

Co-Fe-P and Co-Fe-Sn-P amorphous soft magnetic alloys have been developed by electroplating. These alloys have zero magnetorestrictive compositions and show a high saturation magnetic induction B _s of 10-13.5 kG and high permeability of 3000-5000 at 5 MHz with 2-μm thickness. It was found that the addition of Sn to Co-Fe-P improves the corrosion resistance without decreasing saturation magnetic induction. The magnetic domain structures of the thin-film head-shaped cores with Co-Fe-P amorphous films were also observed by the magnetooptical longitudinal Kerr-effect technique. It was observed that the corrosion resistivity of Co-Fe-Sn-P amorphous alloy is superior to that of Co-Fe-P amorphous alloy

Keywords

Kerr magneto-optical effect; cobalt alloys; corrosion; electroplated coatings; iron alloys; magnetic domains; magnetic permeability; magnetic properties of amorphous substances; magnetic thin films; phosphorus alloys; Co-Fe-P; Co-Fe-Sn-P; amorphous films; corrosion resistance; electroplating; head-shaped cores; magnetic domain structures; magnetooptical longitudinal Kerr-effect; permeability; saturation magnetic induction; soft magnetic alloys; Amorphous magnetic materials; Amorphous materials; Corrosion; Magnetic domains; Magnetic films; Magnetic properties; Permeability; Saturation magnetization; Soft magnetic materials; Tin;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104751

Filename

104751