Investigation of 2 Gb/in/sup 2/ magnetic recording at a track density of 17 kTPI

Investigation of 2 Gb/in/sup 2/ magnetic recording at a track density of 17 kTPI

Developments of magnetic head, recording medium, positioning, and signal processing technologies made it possible to perform magnetic recording at an areal density of 2 Gb/in/sup 2/ on a prototype 3.5-in diameter hard disk drive. A track density of 17 kTPI, which is comparable to or even greater tha...

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Veröffentlicht in:IEEE transactions on magnetics 1991-11, Vol.27 (6), p.5280-5285
Hauptverfasser: Futamoto, M., Kugiya, F., Suzuki, M., Takano, H., Matsuda, Y., Inaba, N., Miyamura, Y., Akagi, K., Nakao, T., Sawaguchi, H., Fukuoka, H., Munemoto, T., Takagaki, T.
Format: Artikel
Sprache:eng
Schlagworte:
Actuators
Disk recording
Magnetic films
Magnetic heads
Magnetic noise
Magnetic recording
Magnetic separation
Saturation magnetization
Signal to noise ratio
Sputtering
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Zusammenfassung:Developments of magnetic head, recording medium, positioning, and signal processing technologies made it possible to perform magnetic recording at an areal density of 2 Gb/in/sup 2/ on a prototype 3.5-in diameter hard disk drive. A track density of 17 kTPI, which is comparable to or even greater than that used in optical storage systems, is used to minimize the reduction in the physical clearance between the medium and the head. The authors outline the system and its component technologies. The read/write characteristics of the 3.5-in prototype disk system are also reported.< >
ISSN:0018-9464
1941-0069
DOI:10.1109/20.278813