• DocumentCode
    788767
  • Title

    Influence of oxygen content on the reduction of the ordering temperature of L10 FePtCu alloy

  • Author

    Kikitsu, Akira ; Maeda, Tomoyuki ; Kai, Tadashi ; Nagase, Toshihiko ; Akiyama, Jun-Ichi ; Fujioka, Naomi ; Ishigami, Takashi

  • Author_Institution
    Corp. R&D Center, Kanagawa, Japan
  • Volume
    39
  • Issue
    5
  • fYear
    2003
  • Firstpage
    2720
  • Lastpage
    2722
  • Abstract
    The influence of the residual oxygen on the ordering (transformation from fcc to fct) temperature of sputtered Fe-Pt-Cu films was investigated. Secondary ion mass spectroscopy analysis revealed that high oxygen content increases the onset temperature of the ordering process. The oxygen is brought into an Fe-Pt-Cu film during the deposition process and forms stable Fe-O compound. This might increase the ordering temperature as well as prevent the coalescence of grains, that is, the nucleation of phase transformation. A hot-pressed Fe-Pt composite target which contains oxygen of 50 ppm was developed. This target is also effective for reducing the ordering temperature of Fe-Pt films.
  • Keywords
    copper alloys; iron alloys; metallic thin films; nucleation; order-disorder transformations; platinum alloys; secondary ion mass spectra; sputtered coatings; FCC-FCT phase transformation; FePtCu:O; L10 FePtCu alloy; grain coalescence; hot-pressed Fe-Pt composite target; nucleation; onset temperature; ordering temperature; residual oxygen content; secondary ion mass spectroscopy; sputtered film; Annealing; Coercive force; Iron; Magnetic analysis; Magnetic anisotropy; Magnetic films; Oxygen; Spectroscopy; Sputtering; Temperature;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.2003.815574
  • Filename
    1233196
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=788767