Structural and Magnetic Properties of Amorphous and Nanocrystalline CoFeSiB Thin Films

Author

Yoon, Jungbum ; Park, Seung-Young ; Jo, Younghun ; Jung, Myung-Hwa ; You, Chun-Yeol ; Kim, Taewan ; Hwang, Jae Youn ; Yim, Hae In ; Rhee, Jang Roh ; Chun, Byong Sun ; You Song Kim ; Young Keun Kim

Author_Institution

Quantum Mater. Res. Team, Korea Basic Sci. Inst., Daejeon

Volume

7

Issue

4

fYear

2008

fDate

7/1/2008 12:00:00 AM

Firstpage

409

Lastpage

411

Abstract

This study examined the structural, magnetic, and transport properties of CoFeSiB films with various Co compositions. The main focus was on two samples, amorphous Co₇₄Fe₄Si₁₄B₈ and nanocrystalline Co₇₈Fe₂Si₁₂B₈ thin films. The results show that the amorphous film is a typical soft magnetic material, while the nanocrystalline film has a large saturation field. It is believed that in a nanocrystalline thin film, a large saturation field is caused by antiferromagnetic exchange at the boundary between the amorphous and nanocrystalline phases.

Keywords

amorphous magnetic materials; antiferromagnetic materials; boron alloys; cobalt alloys; exchange interactions (electron); iron alloys; magnetic thin films; nanostructured materials; silicon alloys; soft magnetic materials; Co₇₄Fe₄Si₁₄B₈; Co₇₈Fe₂Si₁₂B₈; CoFeSiB thin films; amorphous thin films; antiferromagnetic exchange; magnetic properties; nanocrystalline thin films; soft magnetic material; structural properties; transport properties; Amorphous; CoFeSiB thin film; amorphous; antiferromagnetic exchange coupling; nanocrystalline; nanocrystalline CoFeSiB thin film;

fLanguage

English

Journal_Title

Nanotechnology, IEEE Transactions on

Publisher

ieee

ISSN

1536-125X

Type

jour

DOI

10.1109/TNANO.2008.926334

Filename

4531758