• DocumentCode
    1921236
  • Title

    Polarization switching and long-time relaxation effects induced by off-center ions in KTa1-xNbxO3

  • Author

    Knauss, L.A. ; Jaquays, C. ; Adhikari, P. ; Vugmeister, B.E. ; Toulouse, J.

  • Author_Institution
    Dept. of Phys., Lehigh Univ., Bethlehem, PA, USA
  • fYear
    1992
  • fDate
    30 Aug-2 Sep 1992
  • Firstpage
    116
  • Lastpage
    118
  • Abstract
    A striking anomaly was observed in the behavior of KTN (KTa1-xNbxO3), namely, the appearance of a remanent polarization well above Tc. Hysteresis loops were measured at different frequencies in a 3% KTN crystal. The shape of the loop changed significantly with frequency, a behavior that is due to the slow relaxation of randomly distributed off-center Nb ions interacting in clusters. A model of this relaxation is developed, and hysteresis loops are calculated which are in good agreement with experiment
  • Keywords
    dielectric hysteresis; dielectric polarisation; dielectric relaxation; ferroelectric materials; potassium compounds; KTN crystal; KTa1-xNbxO3; clusters; frequencies; hysteresis loops; long-time relaxation effects; polarization switching; randomly distributed off-center Nb ions; remanent polarization; shape; Capacitors; Circuits; Frequency dependence; Hysteresis; Lattices; Metastasis; Niobium; Optical polarization; Resistors; Temperature;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Applications of Ferroelectrics, 1992. ISAF '92., Proceedings of the Eighth IEEE International Symposium on
  • Conference_Location
    Greenville, SC
  • Print_ISBN
    0-7803-0465-9
  • Type

    conf

  • DOI
    10.1109/ISAF.1992.300639
  • Filename
    300639
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1921236