• DocumentCode
    766070
  • Title

    Coercive Force of Fe3O4-γ-Fe2O3 Intermediary Films

  • Author

    Morikawa, Y. ; Namikawa, T. ; Yamazaki, Y.

  • Author_Institution
    Tokyo Institute of Technology, Nagatsuta.
  • Volume
    1
  • Issue
    6
  • fYear
    1985
  • Firstpage
    761
  • Lastpage
    762
  • Abstract
    To determine the effect of the substrate on the properties of ¿-Fe2O3 film obtained by oxidizing Fes3O4, the authors prepared γ-Fe2O3 films from Fe3O4 formed on fused quartz, sapphire, Ti, Au and Al, both with and without a 3500 Å SiO2 film evaporated on the surface. The maximum value of the coercivity was found to depend on the substrate, being higher for films formed on substrates with smaller thermal expansion coefficients. It was concluded that tensile stresses induced in films during oxidation lead to higher coercivities, while in-plane compressive stresses tend to suppress the coercivity.
  • Keywords
    Coercive force; Compressive stress; Gold; Iron; Optical films; Oxidation; Substrates; Tensile stress; Thermal expansion; Thermal stresses;
  • fLanguage
    English
  • Journal_Title
    Magnetics in Japan, IEEE Translation Journal on
  • Publisher
    ieee
  • ISSN
    0882-4959
  • Type

    jour

  • DOI
    10.1109/TJMJ.1985.4548943
  • Filename
    4548943
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=766070