• DocumentCode
    966097
  • Title

    The influence of the grain boundary on the temperature coefficient of Ti-substituted telecommunication ferrites

  • Author

    Franken, P. E C

  • Author_Institution
    Philips Research Laboratories, Eindhoven, The Netherlands
  • Volume
    14
  • Issue
    5
  • fYear
    1978
  • fDate
    9/1/1978 12:00:00 AM
  • Firstpage
    898
  • Lastpage
    899
  • Abstract
    The composition of the grain boundaries of MnZn ferrites has been determined by AES. In Ti-substituted MnZn ferrites, apart from a Ca,Si and Ti-rich layer of about 2 nm, a Ti gradient is found over a broader region in the grain. The Ti gradient influences the magnetic anisotropy and therefore the temperature dependence of the permeability. The result is a flattening of the permeability vs. temperature curve. The origin of the gradient in the grain boundaries is discussed involving a CaO-SiO2-MNO-TiO2kind of phase at the grain boundaries above 1200°c.
  • Keywords
    Ferrites; Magnetic anisotropy; Magnetic thermal factors; Electrons; Ferrites; Grain boundaries; Grain size; Optical microscopy; Performance analysis; Permeability; Sputter etching; Surface cracks; Temperature;
  • fLanguage
    English
  • Journal_Title
    Magnetics, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9464
  • Type

    jour

  • DOI
    10.1109/TMAG.1978.1059806
  • Filename
    1059806
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=966097