Temperature Dependence of the Spontaneous Polarization and the Dielectric Susceptibility near the Phase Transitions in Ammonium Sulfate


Sen S., YURTSEVEN H. H. , Kavruk D.

HIGH TEMPERATURE MATERIALS AND PROCESSES, cilt.29, ss.259-268, 2010 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 29 Konu: 4
  • Basım Tarihi: 2010
  • Dergi Adı: HIGH TEMPERATURE MATERIALS AND PROCESSES
  • Sayfa Sayıları: ss.259-268

Özet

Spontaneous polarization and the dielectric susceptibility are calculated as a function of temperature close to the paraelectric-ferroelectric phase transition (T-C=223 K) in (NH4)(2)SO4 This calculation is performed using a mean field model by fitting the expressions derived for the dielectric susceptibility to the experimental data for the dielectric constant at the fixed frequencies of 100, 500 and 2000 Hz in ammonium sulfate