Role of bottom layer in double recording layer for antiferromagnetically coupled longitudinal media

Author

Li, T.Q. ; Hasegawa, D. ; Saito, S. ; Ohyama, H. ; Imakawa, M. ; Takahashi, Masaharu

Author_Institution

Fuji Electr. Storage Device Co. Ltd., Nagano, Japan

fYear

2005

fDate

4-8 April 2005

Firstpage

1733

Lastpage

1734

Abstract

To clarify the physical origin of high remanent coercivity (H_cr) against the ratio of double recording layers, physical magnetic quantities such as magnetic anisotropy field (H_k), inter-granular interaction (exchange coupling and static magnetic coupling), and thermal agitation were separately discussed for antiferromagnetically coupled media. The AFC media were deposited on textured NiP plated Al substrate. The stacking structure was sub/CrX (underlayer)/CoCrTa (stabilizing layer)/Ru(spacing layer)/CoCrPtB(bottom recording layer)/CoCrPtB(top recording layer).

Keywords

RKKY interaction; antiferromagnetic materials; chromium alloys; chromium compounds; cobalt alloys; cobalt compounds; coercive force; magnetic anisotropy; magnetic multilayers; magnetic recording; ruthenium; tantalum alloys; Al; NiP; antiferromagnetically coupled longitudinal media; double recording layer; exchange coupling; intergranular interaction; magnetic anisotropy field; physical magnetic quantities; remanent coercivity; stacking structure; static magnetic coupling; thermal agitation; Antiferromagnetic materials; Automatic frequency control; Coercive force; Couplings; Disk recording; Magnetic anisotropy; Magnetic recording; Magnetic separation; Perpendicular magnetic anisotropy; Stacking;

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.2005.1464300

Filename

1464300