Appearance of ferromagnetism at room temperature in Mn-Si films prepared by alternate deposition

Author

Takeuchi, T. ; Hirayama, Y. ; Futamoto, M.

Author_Institution

Hitachi Ltd., Tokyo, Japan

Volume

29

Issue

6

fYear

1993

fDate

11/1/1993 12:00:00 AM

Firstpage

3090

Lastpage

3092

Abstract

Ferromagnetic Mn-Si films with Curie temperature of 120°C are obtained, although no Mn-Si compound ferromagnetic at room temperature is reported. Ferromagnetism at room temperature appears when the films are prepared by alternate deposition at a substrate temperature around 360°C. The saturation magnetization is enhanced when polyimide is used as the substrate or placed on other substrate surfaces. The ferromagnetic regions are localized near the interfaces between Mn and Si layers, judging from cross-sectional transmission electron micrographs and the stacking period dependence of the saturation magnetization

Keywords

Auger effect; Curie temperature; ferromagnetic properties of substances; ferromagnetic resonance; magnetic thin films; magnetisation; manganese; manganese alloys; secondary ion mass spectra; silicon; silicon alloys; transmission electron microscope examination of materials; vacuum deposited coatings; vacuum deposition; 120 degC; Curie temperature; Mn-Si; alternate deposition; cross-sectional transmission electron micrographs; ferromagnetic Mn-Si films; ferromagnetic regions; interfaces; polyimide; saturation magnetization; stacking period dependence; substrate surfaces; substrate temperature; Electrons; Glass; Magnetic films; Magnetic multilayers; Magnetic properties; Magnetic resonance; Polyimides; Saturation magnetization; Substrates; Temperature;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.280890

Filename

280890