• DocumentCode
    3125390
  • Title

    Grain-boundary resistivity in barium titanate ceramic positive temperature coefficient sensors

  • Author

    Wong, H. ; Han, P.G. ; Poon, M.C. ; Chen, Y.Y. ; Zheng, X.R.

  • Author_Institution
    Dept. of Electron. Eng., City Univ. of Hong Kong, Kowloon, Hong Kong
  • fYear
    1997
  • fDate
    35672
  • Firstpage
    153
  • Lastpage
    156
  • Abstract
    Several positive temperature coefficient resistors (PTCR´s) are prepared using commercially available BaTiO3 powders with different additives (Y, Mn, Nb, AST). We found that the different additives will result in different grain sizes, grain surface and porosity. However, the temperature-dependent resistivities of these samples do not have significant difference. A new model is proposed to explain this discrepancy and the three-segment characteristics in the PTCR
  • Keywords
    barium compounds; ceramics; electric sensing devices; electrical resistivity; grain boundaries; grain size; porous materials; thermistors; BaTiO3; BaTiO3 powder; PTCR; additive; barium titanate ceramic; grain boundary resistivity; grain size; grain surface; porosity; positive temperature coefficient sensor; Additives; Barium; Ceramics; Conductivity; Ferroelectric materials; Grain boundaries; Grain size; Niobium; Powders; Resistors; Temperature; Temperature distribution; Temperature sensors; Titanium compounds;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Electron Devices Meeting, 1997. Proceedings., 1997 IEEE Hong Kong
  • Print_ISBN
    0-7803-3802-2
  • Type

    conf

  • DOI
    10.1109/HKEDM.1997.642354
  • Filename
    642354
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=3125390