• DocumentCode
    987516
  • Title

    Recording tapes using iron nitride fine powder

  • Author

    Tasaki, Akira ; Tagawa, Kimiteru ; Kita, Eiji ; Harada, Shigehisa ; Kusunose, Tomoya

  • Author_Institution
    University of Tsukuba, Ibaraki, Japan
  • Volume
    17
  • Issue
    6
  • fYear
    1981
  • fDate
    11/1/1981 12:00:00 AM
  • Firstpage
    3026
  • Lastpage
    3028
  • Abstract
    Magnetic recording pigment of Fe4N particles was prepared by nitrogenizing acicular metal iron powder. The treatment to obtain stoichiometric Fe4N was carried out at 400°C for 3 hours in NH3-H2(3:1) mixed gas. The saturation magnetization and coercive force were 120 emu/g and 700 Oe respectively. The Curie point of the powder coincided well with that of bulk material. Test tapes were prepared with this Fe4N powder. The remanent magnetic flux density (Br) of the tape was 2200 G and the coercive force was 670 Oe. From test immersion in saline solution, it is confirmed that the chemical stability of the Fe4N tape is superior to the Fe4N tape is superior to the metal tape.
  • Keywords
    Magnetic tape recording materials; Chemicals; Coercive force; Iron; Magnetic flux density; Magnetic materials; Magnetic recording; Pigmentation; Powders; Saturation magnetization; Testing;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1981.1061762
  • Filename
    1061762
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=987516