Relaxor behavior in Ba(Ti0.72Sn0.28)O3 solid solution

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Abstract

Dielectric properties of the Ba(Ti0.72Sn0.28)O 3 solid solution ceramics are studied as a function of frequency (0.01 Hz-100 kHz) in the temperature range of 300°C to -150°C. A broad dielectric peak with strong frequency dispersion is observed. The temperatures Tm of real and imaginary dielectric peaks fit well to the Vogel-Fulcher law. Both the high-temperature and low-temperature slopes of the real permittivity peak can be described by a Lorenz-type formula. The dielectric hysteresis loops are displayed at low temperatures as well as at temperatures significantly higher than Tm. The Curie-Weiss law is observed at temperatures much higher than Tm.

Original languageEnglish
Pages (from-to)129-136
Number of pages8
JournalFerroelectrics
Volume339
Issue number1 PART 7
DOIs
StatePublished - 2006
Externally publishedYes
Event11th International Meeting on Ferroelectricity, IMF-11 - Iguassu Falls, Brazil
Duration: 5 Sep 20059 Sep 2005

Keywords

  • Relaxor ferroelectrics
  • barium-stannate solid solution
  • dielectric dispersion

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