Effect of perpendicular layer thickness on read/write characteristics of perpendicular/longitudinal composite media using ring-type head

Author

Kurokawa, Yoshiaki ; Nagasaki, Akira ; Homma, Takayuki ; Osaka, Tetsuya

Author_Institution

Dept. of Appl. Chem., Waseda Univ., Tokyo, Japan

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

3810

Lastpage

3812

Abstract

The effects of perpendicular layer thickness on remanent magnetization states and recording characteristics of perpendicular-longitudinal composite media were investigated. The contribution of perpendicular magnetic reversal is varied due to a change in the thickness of perpendicular layer; the transition length of the thinner perpendicular layer medium was broader than that of thicker perpendicular medium. The medium with thicker perpendicular layer shown better performance not only in recording density response but also peak shift characteristics. In order to realize excellent read/write characteristics, optimization of the thickness of perpendicular layer becomes one of the important factors, in addition to the optimization of the underlayer parameters

Keywords

magnetisation reversal; perpendicular magnetic recording; remanence; magnetic reversal; peak shift; perpendicular layer thickness; perpendicular/longitudinal composite media; read/write characteristics; recording density; remanent magnetization; ring-type head; transition length; underlayer parameters; Ferrites; Magnetic flux; Magnetic heads; Magnetic properties; Magnetization; Perpendicular magnetic recording; Space vector pulse width modulation; Testing; Voltage; Writing;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539180

Filename

539180