Write-field interference in the recording process on Co-Cr media: an experimental study

Author

Cramer, H.A.J. ; Schrauwen, C.P.G. ; Bernards, J.P.C. ; Luitjens, S.B.

Author_Institution

Philips Res. Lab., Eindhoven, Netherlands

Volume

26

Issue

1

fYear

1990

fDate

1/1/1990 12:00:00 AM

Firstpage

100

Lastpage

102

Abstract

The frequency response of Co-Cr media, recorded with a ring head, shows a series of additional minima. Investigation with a write head with a large gap (3 μm) revealed that the effect can be modeled as a double transition recorded by the fields at the leading and trailing edges of the head. It was found that the magnitude of the second transition decreases when the recording current is increased above the optimum value. The thickness of the Co-Cr layer has no significant influence on the magnitude of the minima. However, a decrease of the effective perpendicular anisotropy results in a smaller magnitude of the minima. These observations are confirmed by VSM simulations

Keywords

chromium alloys; cobalt alloys; frequency response; magnetic recording; magnetic transitions; magnetisation; Co-Cr media; VSM simulations; double transition; effective perpendicular anisotropy; frequency response; magnetic recording; recording current; ring head; second transition magnitude; write field interference; write head; Anisotropic magnetoresistance; Ferrites; Frequency response; Hydrogen; Interference; Magnetic heads; Magnetic properties; Magnetization; Perpendicular magnetic recording; Pulse circuits;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.50502

Filename

50502