Comparison of Recording Head Designs for Perpendicular and Exchange-Coupled Composite Media

Author

Kapoor, Manish ; Victora, R.H.

Author_Institution

Dept. of Electr. & Comput. Eng., Minnesota Univ.

Volume

43

Issue

6

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

2289

Lastpage

2291

Abstract

Exchange-coupled composite (ECC) media consisting of hard and soft coupled regions has been predicted to exhibit attempt frequencies that are much larger than conventional perpendicular media due to the presence of two degrees of freedom. As a result, adjacent track erasure (ATE) and archivability are adversely affected, whereas writability is significantly enhanced due to thermal fluctuation assisted recording. Recording heads for ECC and perpendicular media, designed dimensionally for recording at 250 Gbits/In², are evaluated within this context. In comparison, recording on ECC media is shown to yield about a factor 2 advantage in areal density

Keywords

composite materials; magnetic heads; magnetic recording; adjacent track erasure; exchange-coupled composite media; head recording; perpendicular media; soft coupled regions; thermal fluctuation; Anisotropic magnetoresistance; Equations; Fluctuations; Frequency estimation; Magnetic heads; Magnetic recording; Magnetization; Perpendicular magnetic recording; Switches; Thermal stability; Attempt frequency; exchange-coupled composite (ECC) media; perpendicular recording; thermal fluctuations;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2007.892857

Filename

4202794