Analysis of track-edge noise in thin-film recording media

Author

Korenari, Takahiro ; Tsuboi, Shinzo ; Okumura, Toshiyuki ; Matsutera, Hisao ; Tagami, Katsumichi

Author_Institution

Functional Devices Res. Labs., NEC Corp, Kanagawa, Japan

Volume

33

Issue

4

fYear

1997

fDate

7/1/1997 12:00:00 AM

Firstpage

2509

Lastpage

2512

Abstract

Track-edge noise has been analyzed to clarify track-edge noise mechanisms. Edge noise arises from two different regions: the bit edge where the magnetization direction is opposite to the previously dc-erased direction and the magnetic transition edge. The edge noise at low density is mainly due to the magnetic distribution at the bit edge. The transition edge noise increases with increasing recording density, and it becomes dominant at high-recording density for an oriented medium. On the other hand, the transition edge noise is almost constant with increasing recording density for an isotropic medium

Keywords

magnetic recording noise; magnetic thin films; bit edge; isotropic medium; magnetic distribution; magnetic transition edge; magnetization direction; oriented medium; recording density; thin-film recording medium; track-edge noise; Magnetic analysis; Magnetic anisotropy; Magnetic heads; Magnetic noise; Magnetic properties; Magnetic recording; Magnetization; Noise measurement; Perpendicular magnetic anisotropy; Transistors;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.595909

Filename

595909