Micromagnetic study of intergranular exchange coupling in tilted perpendicular media

Author

Cheng, X.Z. ; Jalil, Mansoor B.A.

Author_Institution

Electr. & Comput. Eng. Dept., Nat. Univ. of Singapore, Singapore

Volume

41

Issue

10

fYear

2005

Firstpage

3115

Lastpage

3117

Abstract

In order to investigate the prospect of tilted perpendicular media as an alternative to the current longitudinal media, comprehensive simulation of its recording performance is essential. In this paper, we investigate the influence of intergranular exchange coupling in a tilted perpendicular media recording system on its recording properties, such as coercivity, transition parameter a, and signal-to-noise ratio (SNR). A comparison of these parameters is made between tilted and perpendicular media. Significantly better performance is observed of tilted perpendicular media in terms of transition sharpness (50%-100% improvement) and SNR (up to 5 dB).

Keywords

magnetic recording noise; micromagnetics; perpendicular magnetic recording; SNR; intergranular exchange coupling; micromagnetic simulation; perpendicular media recording system; recording performance; recording property; signal-to-noise ratio; tilted perpendicular media; transition parameter; Coercive force; Fluctuations; Lattices; Magnetic heads; Magnetic hysteresis; Magnetic switching; Micromagnetics; Perpendicular magnetic recording; Signal to noise ratio; Switches; Exchange coupling; micromagnetic simulation; signal-to-noise ratio (SNR); tilted perpendicular media; transition parameter;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2005.854887

Filename

1519225