DocumentCode :
860369
Title :
Investigation of Higher Recording Density Using an Improved Co–CoO Metal Evaporated Tape With a GMR Reproducing Head
Author :
Motohashi, Kazuyuki ; Sato, Takao ; Samoto, Tetsuo ; Ikeda, N. ; Sato, Takao ; Ono, H. ; Onodera, S.
Author_Institution :
Chem. Device Bus. Group, Sony Corp., Miyagi
Volume :
43
Issue :
6
fYear :
2007
fDate :
6/1/2007 12:00:00 AM
Firstpage :
2325
Lastpage :
2327
Abstract :
To demonstrate the highest areal recording density of tape media, we have developed a metal evaporated tape with higher magnetic anisotropy of 2.5times105 J/m3 and finer magnetic activation volume of 2.7times10-24 m3 of a Co-CoO recording layer deposited on a smoother base film. A capability of an areal recording density of 23.0 Gb/in2 was confirmed using a giant magnetoresistive head as a read head. The smoother surface roughness improved signal-to-noise ratio more than 2 dB
Keywords :
cobalt; cobalt compounds; ferromagnetic materials; giant magnetoresistance; magnetic anisotropy; magnetic heads; magnetic recording; surface roughness; Co-CoO; GMR reproducing head; giant magnetoresistive head; magnetic anisotropy; magnetic tape recording; metal evaporated tape; recording density; signal-to-noise ratio; surface roughness; Giant magnetoresistance; Magnetic anisotropy; Magnetic field measurement; Magnetic films; Magnetic heads; Magnetic recording; Perpendicular magnetic anisotropy; Rough surfaces; Signal to noise ratio; Surface roughness; Areal recording density; giant magnetoresistive head; magnetic tape recording; metal evaporated;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2007.893138
Filename :
4202852
Link To Document :
https://search.ricest.ac.ir/dl/search/defaultta.aspx?DTC=49&DC=860369
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