• DocumentCode
    1154300
  • Title

    Magnetic viscosity of uniform γ-Fe2O3 particles with different degrees of cationic ordering

  • Author

    Morales, M.P. ; de Julian, C. ; Serna, C.J. ; Gonzalez, J.M.

  • Author_Institution
    Inst. de Ciencia de Mater., CSIC, Madrid, Spain
  • Volume
    30
  • Issue
    2
  • fYear
    1994
  • fDate
    3/1/1994 12:00:00 AM
  • Firstpage
    772
  • Lastpage
    774
  • Abstract
    Results are presented about the time dependence of the magnetization in γ-Fe2O3 particles obtained from α-Fe2O3 through a reduction-oxidation process. The precursor particles were prepared by homogeneous hydrolysis in solution. This preparation method led to a narrow distribution of particle dimensions which allowed us to consider the particles as being monodisperse. The viscosity study included the evaluation of the activation volume of pressed powder samples formed by spindle-like γ-Fe2O3 particles (aspect ratio 6) with different degree of order in their cationic distribution, at temperatures from 100 to 480 K
  • Keywords
    iron compounds; magnetic properties of fine particles; magnetisation; 100 to 400 K; Fe2O3; activation volume; cationic ordering; homogeneous hydrolysis; magnetic viscosity; magnetization; time dependence; uniform γ-Fe2O3 particles; Coercive force; Iron; Magnetic anisotropy; Magnetic field measurement; Magnetic properties; Perpendicular magnetic anisotropy; Saturation magnetization; Temperature dependence; Viscosity; X-ray scattering;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.312404
  • Filename
    312404
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1154300