Uniaxial magnetic FeC thin films sputtered onto polymer substrates

Author

Oka, K. ; Yano, N. ; Furukawa, S. ; Ogasawara, I. ; Yamasaki, J. ; Humphrey, F.B.

Author_Institution

R&D Center, UNITIKA Ltd., Kyoto, Japan

Volume

31

Issue

6

fYear

1995

fDate

11/1/1995 12:00:00 AM

Firstpage

3997

Lastpage

3999

Abstract

Thin films of FeC were deposited onto a polymer substrate by reactive DC magnetron sputtering, using an argon and hydrocarbon gas mixture. The polymer web is wound by a roll coater, and an individual thin film with a constant thickness is piled up by increasing a number of passes UP to a desired thickness. Uniaxial films with Hk=4000 A/m and low dispersion were obtained. The coercive force was a function of thickness; it was Hc=8 A/m for films 0.8 μm thick. The easy axis of the uniaxial anisotropy was along the direction transverse to the rolling direction of the polymer web. The origin of the uniaxial anisotropy is the anisotropic thermal shrinkage of the polymer web is discussed by a model

Keywords

coercive force; ferromagnetic materials; iron alloys; magnetic anisotropy; magnetic thin films; soft magnetic materials; sputtered coatings; 0.8 mum; FeC; anisotropic thermal shrinkage; coercive force; low dispersion; polymer substrates; reactive DC magnetron sputtering; uniaxial magnetic FeC thin films; Anisotropic magnetoresistance; Argon; Hydrocarbons; Magnetic anisotropy; Magnetic films; Perpendicular magnetic anisotropy; Polymer films; Sputtering; Substrates; Wounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.489842

Filename

489842