Media Noise Characteristics of CoCrTa/FeSiAl Perpendicular Magnetic Recording Media

Media Noise Characteristics of CoCrTa/FeSiAl Perpendicular Magnetic Recording Media

Media noise characteristics of CoCrTa/FeSiAl perpendicular magnetic recording media were investigated to clarify the effects of underlayer characteristics such as crystalline orientation, surface roughness on the medium noise of double-layer media. A strong correlation was found between maintaining...

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Veröffentlicht in:Journal of the Magnetics Society of Japan 1997, Vol.21(S_2_PMRC_97_2), pp.S2_517-520
Hauptverfasser: HOKKYO, Hirotaka, TSUBOI, Shinzo, OHSHIMA, Norikazu, TAGAMI, Katsumichi
Format: Artikel
Sprache:eng
Schlagworte:
Cr layer
Medium noise
Surface roughness
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Zusammenfassung:Media noise characteristics of CoCrTa/FeSiAl perpendicular magnetic recording media were investigated to clarify the effects of underlayer characteristics such as crystalline orientation, surface roughness on the medium noise of double-layer media. A strong correlation was found between maintaining a smooth underlayer surface and attaining a low level of medium noise. Insertion of a Cr layer between the glass substrate and the FeSiAl underlayer and sputtering the underlayer at low Ar-gas pressure are effective in maintaining its surface smoothness. These measures reduce medium noise.
ISSN:0285-0192
1880-4004
DOI:10.3379/jmsjmag.21.S2_517