• DocumentCode
    987467
  • Title

    The dependence of the coercivity on the volume packing fraction for magnetic particles

  • Author

    Umeki, S. ; Sugihara, H. ; Taketomi, Y. ; Imaoka, Y.

  • Author_Institution
    TDK Electronics Company Ltd., Nagano, Japan
  • Volume
    17
  • Issue
    6
  • fYear
    1981
  • fDate
    11/1/1981 12:00:00 AM
  • Firstpage
    3014
  • Lastpage
    3016
  • Abstract
    The advanced method of the dilution of magnetic particles with α-FeOOH particles was studied. This method permits the determination of the dependence of coercivity on the packing fraction and the evaluation of Hc(0) has become possible. The coercivity of Co-adsorbed γ-Fe2O3or CrO2particles decreases rather slowly with the packing fraction compared with γ-Fe2O3or Co-doped γ-Fe2O3particles. This behavior is interpreted by the existence of some nonmagnetic surface layers on the particles. These layers are thought to make the magnetic particle interactions weak to prevent the apparent coercivity from decreasing steeply.
  • Keywords
    Coercive forces; Magnetic tape recording materials; Coercive force; Dispersion; Electrons; Magnetic field measurement; Magnetic force microscopy; Magnetic materials; Magnetic particles; Magnetic properties; Mortar; Powders;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1981.1061758
  • Filename
    1061758
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=987467