• DocumentCode
    1448313
  • Title

    Annealing effect on exchange bias in Ni81Fe19/Cr50Mn50 bilayers

  • Author

    Xi, Haiwen ; Bian, Bo ; Zhuang, Zailong ; Laughlin, David E. ; White, Robert M.

  • Author_Institution
    Dept. of Electr. & Comput. Eng., Carnegie Mellon Univ., Pittsburgh, PA, USA
  • Volume
    36
  • Issue
    5
  • fYear
    2000
  • fDate
    9/1/2000 12:00:00 AM
  • Firstpage
    2644
  • Lastpage
    2646
  • Abstract
    The effect of annealing on the exchange bias in Ni81Fe 19/Cr50Mn50 bilayers was investigated. A large increase of the exchange field and coercivity was observed in the samples annealed at temperatures higher than 310°C. The annealing causes the Mn atoms in the Cr50Mn50 layer to diffuse into the Ni81Fe19 layer and form an antiferromagnetic NiFeMn phase, which coats on the Ni81Fe 19 grain surface and contributes to the improvement of exchange bias. An increase of interface roughness due to the Mn diffusion also results in the exchange bias enhancement. The enhanced exchange field and coercivity were explained by the reversible and irreversible motions of NiFeMn moments of the inhomogeneous grains
  • Keywords
    annealing; chemical interdiffusion; chromium alloys; coercive force; exchange interactions (electron); interface roughness; iron alloys; magnetic multilayers; manganese alloys; nickel alloys; 310 degC; Mn atoms interdiffusion; Ni81Fe19-Cr50Mn50; Ni81Fe19/Cr50Mn50 bilayers; NiFeMn; annealing effect; antiferromagnetic NiFeMn phase; coercivity; exchange bias; exchange field; interface roughness; Anisotropic magnetoresistance; Annealing; Antiferromagnetic materials; Chromium; Coercive force; Iron; Magnetic films; Magnetic materials; Sputtering; Temperature;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/20.908546
  • Filename
    908546
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1448313