Title :
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
fDate :
9/1/1996 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
