Magnetic properties of compositionally modulated Fe-based nitride alloy films

Author

Sakakima, H. ; Ihara, K. ; Osano, K. ; Kaminaka, N.

Author_Institution

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

Volume

26

Issue

5

fYear

1990

fDate

9/1/1990 12:00:00 AM

Firstpage

2347

Lastpage

2349

Abstract

Fe-based compositionally modulated films composed of five 100-nm-thick nonnitride and nitride layers were prepared by N₂ reactive sputtering. Soft magnetic properties are obtained when the layer thickness is less than 15 nm for metal-metalloid-type alloy films such as Fe-Nb-B/Fe-Nb-B-N and when less than 30 nm for metal-metal type films such as Fe-Nb/Fe-Nb-N. The layered structure and the soft magnetic properties are thermally stable up to 600°C. The films having high saturation magnetization, 4ΠMs=12-16 kG, and high permeability, μ=2000-3000 (at 1 MHz), are promising head-core materials for high-density recording

Keywords

boron alloys; boron compounds; iron alloys; iron compounds; magnetic heads; magnetic permeability; magnetic thin films; magnetisation; niobium alloys; niobium compounds; sputtered coatings; 600 degC; FeNb-FeNbN; FeNbB-FeNbBN; N₂ reactive sputtering; compositionally modulated Fe-based nitride alloy films; head-core materials; high permeability; high saturation magnetization; high-density recording; layer thickness; layered structure; metal-metal type films; metal-metalloid-type alloy films; soft magnetic properties; Annealing; Coercive force; Iron; Magnetic films; Magnetic modulators; Magnetic properties; Phase modulation; Sputtering; Substrates; X-ray diffraction;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.104719

Filename

104719