High density recording on magnetically induced super resolution disk with magnetic field modulation and pulsed laser irradiation

Author

Suzuki, Yoshihisa ; Tanase, Kenji ; Yamaguchi, Atsushi ; Murata, Seiji ; Sumi, Satoshi ; Torazawa, Kenji

Author_Institution

Hypermedia Res. Center, Sanyo Electr. Co. Ltd., Gifu, Japan

Volume

32

Issue

5

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

4067

Lastpage

4069

Abstract

The magnetically induced super resolution disk with an in-plane magnetized layer (CAD-MSR) is one of the most useful candidates for high density recording because of its simple structure and no initializing fields. This paper describes an evaluation of a CAD-MSR disk using magnetic field modulation with a pulsed laser, which is also useful for high density recording. We obtained a jitter of less than 10% at a bit density of 0.3 μm/bit (2 T=0.4 μm in (1,7) RLL code). The real density corresponds to an unformatted capacity of more than 5 Gbytes on a φ 120 mm disk

Keywords

jitter; magnetic disc storage; magnetisation; magneto-optical modulation; magneto-optical recording; 120 mm; 120 mm disk; 5 Gbyte; CAD-MSR; bit density; high density recording; in-plane magnetized layer; jitter; magnetic field modulation; magnetically induced super resolution disk; pulsed laser irradiation; unformatted capacity; Dielectric substrates; Disk recording; Jitter; Magnetic fields; Magnetic modulators; Magnetic recording; Optical pulses; Optical recording; Power lasers; Pulse modulation;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.539265

Filename

539265