• DocumentCode
    1016048
  • Title

    Alumite disc using anordic oxidation

  • Author

    Tsuya, N. ; Tokushima, T. ; Shiraki, M. ; Wakui, Y. ; Saito, Y. ; Nakamura, H. ; Hayano, S. ; Furugori, A. ; Tanaka, M.

  • Author_Institution
    Hosei University, Kajino Koganei, Tokyo, Japan
  • Volume
    22
  • Issue
    5
  • fYear
    1986
  • fDate
    9/1/1986 12:00:00 AM
  • Firstpage
    1140
  • Lastpage
    1145
  • Abstract
    Perpendicular magnetic alumite discs were obtained using an anodic oxidation method.The additional new pore widening process was effective to control the coercive force. The electro-deposited fine iron needles were single crystals and the growth direction was [110]. The recording characteristics of 3.5 and 5.25 inch rigid discs were evaluated. A recording density D50of 50 KBPI was attained for the disc with a media thickness 1.5 µm. The environmental test under an atmosphere of of 40 °C 90 % R. H. over 1000 hr affirmed the stability of the alumite disc with 250A SiO2overcoat.
  • Keywords
    Perpendicular magnetic recording; Atmosphere; Coercive force; Crystals; Disk recording; Force control; Iron; Needles; Oxidation; Perpendicular magnetic recording; Testing;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1986.1064316
  • Filename
    1064316
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1016048