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Trial for Deep Submicron Track Width Recording
Hiroaki MURAOKA Yoshihisa NAKAMURA
IEICE TRANSACTIONS on Electronics
Publication Date: 1995/11/25
Print ISSN: 0916-8516
Type of Manuscript: Special Section PAPER (Special Issue on Ultra High Density Information Storage Technologies)
perpendicular magnetic recording, narrow track, single-pole head, multilevel recording, partial response, signal-to-noise ratio,
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Extremely narrow track width of deep submicron range is examined in perpendicular magnetic recording. Head field distribution of a single-pole head analyzed by 3-dimensional computer simulation results in a sharp gradient, but relatively large cross-sectional area is required to maintain head field strength. Based on this design concept, a lateral single-pole head is described and proved to attain track width of 0.4 µm. In addition, multilevel partial response appropriate to the new multitrack recording system is proposed.