• DocumentCode
    1012772
  • Title

    Microstructural studies of oxide doped PrCo5magnets

  • Author

    Ghandehari, M.H. ; Fidler, J.

  • Author_Institution
    Union Oil Science & Technology Division, Brea, California USA
  • Volume
    21
  • Issue
    5
  • fYear
    1985
  • fDate
    9/1/1985 12:00:00 AM
  • Firstpage
    1973
  • Lastpage
    1975
  • Abstract
    Pr0.8Sm0.2Co5magnets doped with Cr2O3have displayed high coercivity similar to SmCo5. Transmission electron microscopy (TEM), electron diffraction and x-ray microanalysis of a doped magnet showed absence of grains with high density basal stacking faults identified as (Pr,Sm)2Co7and (Pr,Sm)5Co19whereas microprecipitates of (Pr,Sm)2O3and CaO were located within the 1-5 grains and near grain boundaries, respectively. The resultant coercivity increase is explained by a model based on the nucleation of reversed domains. Grains with a high density of martensitic transformation twins which occasionally occur in (Pr,Sm)Co5magnets were identified as (Pr,Sm)Co2.
  • Keywords
    Permanent magnets; Chromium; Coercive force; Demagnetization; Electron microscopy; Grain boundaries; Grain size; Magnets; Stacking; Transmission line matrix methods; X-ray diffraction;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1985.1064030
  • Filename
    1064030
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1012772