Low noise perpendicular magnetic recording media for deep submicron track width recording

Author

Honda, Naoki ; Ariake, Jun ; Yamakawa, Kiyoshi ; Ouchi, Kazuhiro ; Iwasaki, Shun-ichi

Author_Institution

Akita Res. Inst. of Adv. Technol., Japan

Volume

36

Issue

5

fYear

2000

fDate

9/1/2000 12:00:00 AM

Firstpage

2414

Lastpage

2416

Abstract

Noise reduction in double-layered perpendicular recording media with a thick soft magnetic backlayer was studied. Although the medium noise was increased with the backlayer, the noise for quaternary alloy films could be substantially reduced by introducing a certain intermediate layer between the alloy layer and the backlayer. The double-layered medium obtained exhibited a waveform with sharp transitions as well as a low noise property when recorded with a single pole head. The recording performances suggested the potential of the medium for a high areal density recording around 50 Gbit/in²

Keywords

chromium alloys; cobalt alloys; magnetic film stores; magnetic recording noise; niobium alloys; perpendicular magnetic recording; platinum alloys; CoCrNbPt; deep submicron track width recording; high areal density recording; intermediate layer; noise reduction; perpendicular magnetic recording media; quaternary alloy films; recording performance; single pole head; thick soft magnetic backlayer; Demagnetization; Magnetic films; Magnetic heads; Magnetic noise; Magnetic properties; Magnetic recording; Noise reduction; Perpendicular magnetic recording; Soft magnetic materials; Voltage;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.908450

Filename

908450