• DocumentCode
    985846
  • Title

    Time dependent magnetization of a system of fine cobalt particles

  • Author

    O´Grady, K. ; Chantrell, R.W. ; Popplewell, J. ; Charles, S.W.

  • Author_Institution
    University College of North Wales, Bangor, Gwynedd, UK.
  • Volume
    17
  • Issue
    6
  • fYear
    1981
  • fDate
    11/1/1981 12:00:00 AM
  • Firstpage
    2943
  • Lastpage
    2945
  • Abstract
    Measurements are presented which show that the magnetisation of a system of fine cobalt particles at 77°K is time dependent. The system examined in this work is of fine cobalt particles with median diameter Dv= 70 Å dispersed in toluene. The particles have been found to be in the fcc phase. The time decay of magnetisation has been found to be logarithmic. The time dependence coefficient A = -d\\bar{I}/dLnt varies with the applied field H and is a maximum for H = Hcthe coercive force. These observations are in good agreement with the theory presented in this paper.
  • Keywords
    Powdered magnetic materials/devices; Soft magnetic materials/devices; Anisotropic magnetoresistance; Cobalt; Coercive force; Magnetic anisotropy; Magnetic field measurement; Particle measurements; Perpendicular magnetic anisotropy; Saturation magnetization; Time measurement; Volume relaxation;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1981.1061621
  • Filename
    1061621
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=985846