Ultra-high-density magnetic information storage technologies

Keishi Ohashi, Nobuyuki Ishiwata, Masahiro Yanagisawa, Akinobu Sato, Shinzo Tsuboi, Hirotaka Hokkyo

Research output: Contribution to journalArticle

Abstract

Three approaches used to achieve ultra-high-density recording of 100 Gbit/in2 are discussed. In order to overcome the thermal fluctuation problem of recorded patterns, a write head with Co-Ni-Fe poles has been developed. The Co-Ni-Fe pole generates the strongest write field. The head wrote well in media with a coercivity of 7 kOe, which is sufficiently large for ultra-high-density recording. A narrow gap Co-Ni-Fe head for perpendicular recording has also been developed. The experimental results on contact recording and a double-layer perpendicular medium are also discussed.

Original languageEnglish
Pages (from-to)160-165
Number of pages6
JournalNEC Research and Development
Volume41
Issue number2
Publication statusPublished - 2000 Apr
Externally publishedYes

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Poles
Data storage equipment
Coercive force
Hot Temperature

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

Cite this

Ohashi, K., Ishiwata, N., Yanagisawa, M., Sato, A., Tsuboi, S., & Hokkyo, H. (2000). Ultra-high-density magnetic information storage technologies. NEC Research and Development, 41(2), 160-165.

Ultra-high-density magnetic information storage technologies. / Ohashi, Keishi; Ishiwata, Nobuyuki; Yanagisawa, Masahiro; Sato, Akinobu; Tsuboi, Shinzo; Hokkyo, Hirotaka.

In: NEC Research and Development, Vol. 41, No. 2, 04.2000, p. 160-165.

Research output: Contribution to journalArticle

Ohashi, K, Ishiwata, N, Yanagisawa, M, Sato, A, Tsuboi, S & Hokkyo, H 2000, 'Ultra-high-density magnetic information storage technologies', NEC Research and Development, vol. 41, no. 2, pp. 160-165.
Ohashi K, Ishiwata N, Yanagisawa M, Sato A, Tsuboi S, Hokkyo H. Ultra-high-density magnetic information storage technologies. NEC Research and Development. 2000 Apr;41(2):160-165.
Ohashi, Keishi ; Ishiwata, Nobuyuki ; Yanagisawa, Masahiro ; Sato, Akinobu ; Tsuboi, Shinzo ; Hokkyo, Hirotaka. / Ultra-high-density magnetic information storage technologies. In: NEC Research and Development. 2000 ; Vol. 41, No. 2. pp. 160-165.
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