A Preparation of Perpendicular Magnetic Recording Media by an Electroless Plating Method

A Preparation of Perpendicular Magnetic Recording Media by an Electroless Plating Method

The perpendicularly oriented crystal structure conditions of electroless plated film for high-density perpendicular recording media were investigated mainly by (002) plane rocking curves and cross-sectional SEM observation. A highly oriented narrow dispersion of c-axis orientation normal to the surf...

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Veröffentlicht in:Journal of the Electrochemical Society 1983-03, Vol.130 (3), p.568-571
Hauptverfasser: Osaka, Tetsuya, Kasai, Naoki, Koiwa, Ichiro, Goto, Fumio, Suganuma, Yoji
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container_end_page 571
container_issue 3
container_start_page 568
container_title Journal of the Electrochemical Society
container_volume 130
creator Osaka, Tetsuya
Kasai, Naoki
Koiwa, Ichiro
Goto, Fumio
Suganuma, Yoji
description The perpendicularly oriented crystal structure conditions of electroless plated film for high-density perpendicular recording media were investigated mainly by (002) plane rocking curves and cross-sectional SEM observation. A highly oriented narrow dispersion of c-axis orientation normal to the surface plane was consequently obtained and the columnar structure of h.c.p. crystal with approx 0.05 mu m dia. was confirmed. As a result of preparing disks A and B, which were chemically plated from an optimum bath and a more improved bath, respectively, the recording characteristics with a combination of ring head were obtained as recording densities of D sub 50 = 18 500 FRPI for disk A and 25 000 FRPI for disk B, in spite of a relatively thick magnetic medium. The dipulse waveforms, which are characterized with perpendicular recording, were observed at low bit recording density. It was indicated by the results that the chemically plated Co alloy films are applicable as a perpendicular recording medium. 12 ref.--AA
doi_str_mv 10.1149/1.2119752
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title A Preparation of Perpendicular Magnetic Recording Media by an Electroless Plating Method
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