Control of in-plane magnetic anisotropy field of Fe-Co-B/[Ni-Fe/Si] on disk substrate

Author

Kong, S.H. ; Kim, K.H. ; Nakagawa, S.

Author_Institution

Venture Bus. Lab., Kagoshima Univ., Japan

fYear

2005

fDate

4-8 April 2005

Firstpage

1327

Lastpage

1328

Abstract

Fe-Co-B/[Ni-Fe/Si] soft magnetic underlayer (SUL), with very high magnetic anisotropy field H_k of above 380 Oe as well as high saturation magnetization 4πM_s of 22 kG, was successfully deposited using a facing targets sputtering apparatus at room temperature. Surface domain structure was observed by optical surface analyzer. The method to induce orientation of H_k to the cross track direction in the SUL deposited on disk substrate was investigated. Results indicate that the underlayer is suitable for low noise type SUL of perpendicular magnetic recording media.

Keywords

Permalloy; cobalt compounds; ferromagnetic materials; iron compounds; magnetic anisotropy; magnetic domains; magnetic multilayers; perpendicular magnetic recording; silicon; soft magnetic materials; sputtered coatings; 293 to 298 K; FeCoB-NiFe-Si; cross track; disk substrate; facing targets sputtering apparatus; in-plane magnetic anisotropy field; optical surface analyzer; perpendicular magnetic recording media; room temperature; saturation magnetization; soft magnetic underlayer; surface domain structure; Geometrical optics; Magnetic anisotropy; Magnetic domains; Optical noise; Perpendicular magnetic anisotropy; Perpendicular magnetic recording; Saturation magnetization; Soft magnetic materials; Sputtering; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Magnetics Conference, 2005. INTERMAG Asia 2005. Digests of the IEEE International

Print_ISBN

0-7803-9009-1

Type

conf

DOI

10.1109/INTMAG.2005.1464093

Filename

1464093