Recording characteristics of electroless-plated CoNiReP films with an in-plane anisotropic initial layer

Hiroshi Matsubara, Hirokazu Mizutani, Satoshi Mitamura, Tetsuya Osaka

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Abstract

Two kinds of electroless-plated CoNiReP media were fabricated using the underlayers of electroless-plate NiP and NiMoP films. Namely, the perpendicular anisotropic CoNiReP film with an in-plane anisotropic initial layer (Hc(∥)=50 Oe) plated onto the almost nonmagnetic electroless NiMoP underlayer and the perpendicular anisotropic CoNiReP film plated onto the nonmagnetic NiP underlayer. These media were evaluated as flexible disks combined with a Sendust ring head. A high reproduced voltage was obtained in the CoNiReP/NiMoP double layer media compared to that in the CoNiReP/NiP double layer media. Also, recording up to a very high density of 300 kFRPI was acheived. Thus, the medium with a quasi-soft magnetic in-plane anisotropic initial layer is suggested to be preferred to the higher density recording media combined with a ring head.

Original languageEnglish
Pages (from-to)1895-1898
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume27
Issue number10
Publication statusPublished - 1988 Oct

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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