A Comparative Study of Perpendicular Media

Author

Greaves, Simon ; Kanai, Yasushi ; Muraoka, Hiroaki

Author_Institution

RIEC, Tohoku Univ., Sendai

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2118

Lastpage

2120

Abstract

Three types of perpendicular recording media were compared using simulations. Exchange coupled composite (ECC) type media could support minimum track pitches up to 18 nm less than a single layer medium, allowing significantly higher areal recording densities. The recording performance of all media was highly susceptible to grain-to-grain variations of uniaxial anisotropy K_u and, in the case of ECC media, to variations in the interlayer coupling strength. Areal densities of around 500 Gb/in² should be achievable using current technologies, higher densities require improved manufacturing tolerances

Keywords

composite materials; exchange interactions (electron); perpendicular magnetic anisotropy; perpendicular magnetic recording; exchange coupled composite type media; interlayer coupling strength; minimum track pitches; perpendicular recording media; uniaxial anisotropy; Anisotropic magnetoresistance; Grain size; Magnetic heads; Magnetic recording; Manufacturing; Micromagnetics; Perpendicular magnetic recording; Saturation magnetization; Size control; Soft magnetic materials; Composite media; micromagnetic simulation; perpendicular magnetic recording;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.893125

Filename

4202741