Magnetic properties and recording characteristics of Co-Cr-Ta-Mo perpendicular recording media

Some Co-Cr-Ta-Mo perpendicular magnetic recording disks with different Mo content (C/sub Mo/) ranging from 13 to 5.1 at.% were fabricated by ion beam sputtering prepared. Magnetic properties, crystal structure and recording characteristics of those media were investigated. The disks with (C/sub Mo/)...

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Bibliographic Details
Published in:IEEE transactions on magnetics 1999-09, Vol.35 (5), p.2745-2747
Main Authors: Kuga, K., Yonesa, Y., Numazawa, J., Naoe, M.
Format: Article
Language:English
Subjects:
Argon
CD recording
Chromium
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Disk recording
Exact sciences and technology
Ion beams
Magnetic films
Magnetic noise
Magnetic properties
Magnetic properties and materials
Magnetic recording materials
Perpendicular magnetic recording
Physics
Sputtering
Studies of specific magnetic materials
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Summary:Some Co-Cr-Ta-Mo perpendicular magnetic recording disks with different Mo content (C/sub Mo/) ranging from 13 to 5.1 at.% were fabricated by ion beam sputtering prepared. Magnetic properties, crystal structure and recording characteristics of those media were investigated. The disks with (C/sub Mo/) of 0 to 35 at% exhibited almost the same output values, however the media noise was decreased with increasing (C/sub Mo/). The disks with (C/sub Mo/) of 35 at.% exhibited the highest S/N, of which value 3.2 dB higher S/N, than that of the disks without Mo at a wavelength of 0.34 /spl mu/m.
ISSN:0018-9464
1941-0069
DOI:10.1109/20.800972