• DocumentCode
    973296
  • Title

    Magnetic recording characteristics of sputtered γ-Fe2O3thin flim disks

  • Author

    Hattori, S. ; Ishii, Y. ; Shinohara, M. ; Nakagawa, T.

  • Author_Institution
    N.T.T., Tokai, Ibaraki, Japan.
  • Volume
    15
  • Issue
    6
  • fYear
    1979
  • fDate
    11/1/1979 12:00:00 AM
  • Firstpage
    1549
  • Lastpage
    1551
  • Abstract
    A thin film disk of γ-Fe2O3for high density magnetic recording has been developed. γ-Fe2O3films were prepared in a serial process from the reactive sputtering of on to α-Fe2O3reduced to Fe3O4and oxidized to γ-Fe2O3. A high coercive force of 700 Oe and a squareness ratio of 0.8 were attained for γ-(Fe0.955Ti0.025Co0.02)2O3. Recording characteristics of the disk were evaluated using a Mn-Zn ferrite head. The recording density D50reached 1,100 bits/mm (27,900 bpi), and the number of dropout errors at 50 % threshold level was less than 50 per surface. Stability versus temperature change and wear resistance were also evaluated.
  • Keywords
    Magnetic disk recording; Sputtering; Coercive force; Disk recording; Ferrites; Iron; Magnetic films; Magnetic heads; Magnetic recording; Sputtering; Stability; Surface resistance;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1979.1060465
  • Filename
    1060465
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=973296