STUDY ON ELECTROLESS PLATING OF COBALT ALLOY FILMS FOR PERPENDICULAR RECORDING.

Tetsuya Osaka, Naoki Kasai, Ichiro Koiwa, Fumio Goto

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

An electroless plating bath for the preparation of perpendicular recording media was developed. It was found that the hcp structure of Co-P is oriented normal to the film plane with the Mn codeposition into the films. First, an ammoniacal malonate-malate bath, containing MnSO//4, was selected. Nickel was codeposited into the films in order to decrease the saturation magnetization, Ms, since low Ms is necessary to decrease the demagnetizing field. Second, effects were investigated for three factors (i. e. , MnSO//4 concentration, bath pH, and NiSO//4 concentration) causing the c-axis perpendicular orientation of the film properties. Optimum plating conditions for perpendicular recording media are determined.

Original languageEnglish
Pages (from-to)790-794
Number of pages5
JournalJournal of the Electrochemical Society
Volume130
Issue number4
Publication statusPublished - 1983 Apr

Fingerprint

cobalt alloys
Cobalt alloys
Electroless plating
plating
recording
baths
Saturation magnetization
Nickel
Plating
nickel
saturation
magnetization
preparation

ASJC Scopus subject areas

  • Electrochemistry
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

STUDY ON ELECTROLESS PLATING OF COBALT ALLOY FILMS FOR PERPENDICULAR RECORDING. / Osaka, Tetsuya; Kasai, Naoki; Koiwa, Ichiro; Goto, Fumio.

In: Journal of the Electrochemical Society, Vol. 130, No. 4, 04.1983, p. 790-794.

Research output: Contribution to journalArticle

Osaka, Tetsuya ; Kasai, Naoki ; Koiwa, Ichiro ; Goto, Fumio. / STUDY ON ELECTROLESS PLATING OF COBALT ALLOY FILMS FOR PERPENDICULAR RECORDING. In: Journal of the Electrochemical Society. 1983 ; Vol. 130, No. 4. pp. 790-794.
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