Vacuum deposition of Co-Cr perpendicular anisotropy films on polymer substrates treated with ion beam

Author

Sugita, R. ; Tohma, K. ; Honda, K. ; Kawawake, Y. ; Echigo, N. ; Murakami, Y.

Author_Institution

Matsushita Electr. Ind. Co. Ltd., Osaka, Japan

Volume

25

Issue

5

fYear

1989

fDate

9/1/1989 12:00:00 AM

Firstpage

4183

Lastpage

4185

Abstract

The author investigated the effect of ion-beam treatment of polymer substrate surfaces on magnetic properties, microstructure, adhesive force, and recording performances of vacuum-deposited Co-Cr films. Films which are deposited on the ion-beam-treated substrates have higher H_c⊥ than that of the films on untreated substrates without the treatment and have H_keff values high enough for perpendicular magnetic recording applications. With ion-beam treatment the adhesive force of the Co-Cr films is considerably improved, becoming of practical strength. The films deposited on the treated substrates reproduced voltage as high as that of Co-Cr films with Ti underlayer. Ion-beam treatment of the polymer substrates therefore makes both glow discharge treatment and the use of a Ti underlayer unnecessary and promises high manufacturing productivity

Keywords

chromium alloys; cobalt alloys; ferromagnetic properties of substances; ion beam effects; magnetic recording; magnetic thin films; vacuum deposited coatings; Co-Cr perpendicular anisotropy films; adhesive force; high manufacturing productivity; ion-beam treatment; ion-beam-treated substrates; magnetic properties; microstructure; perpendicular magnetic recording; perpendicular recording; polymer substrates; recording performances; reproduced voltage; vacuum-deposited Co-Cr films; Anisotropic magnetoresistance; Glow discharges; Magnetic films; Magnetic properties; Manufacturing; Microstructure; Perpendicular magnetic recording; Polymer films; Surface treatment; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.42562

Filename

42562