Optimization of head-medium parameters for electroless CoNiReP/NiFeP double-layered media using ring-type heads

T. Osaka, T. Homma, T. Watanabe, Y. Kurokawa

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Optimization of head/medium parameters for perpendicular recording on the electrolessly deposited CoNiRep/ NiFeP double-layered (DL) media was examined in combination with ring-type heads. Higher reproduced voltage was obtained in the DL medium with higher underlayer coercivity, Hc(u), (160 Oe) due to the 'phase sychronization' (PS) effect. It was necessary to adjust the perpendicular magnetization layer thickness, δp, in accordance with the head Bs in order to obtain sufficient PS effect. In the higher recording density region, the combination of a small gap head (0.08 μm) and a medium with thicker δp (0.3 δm) and lower Hc(u) (50 Oe) was optimal, due to higher crystal orientation at the medium surface and improvement of head field penetration.

Original languageEnglish
Pages (from-to)331-335
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume134
Issue number2-3
DOIs
Publication statusPublished - 1994 Jun

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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