Calculation of the spontaneous polarization for Pb1-xCaxTiO3 close to the tricritical point

Tari O., YURTSEVEN H. H.

FERROELECTRICS, cilt.505, sa.1, ss.24-33, 2016 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 505 Sayı: 1
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1080/00150193.2016.1254001
  • Dergi Adı: FERROELECTRICS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.24-33
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

We calculate the spontaneous polarization as a function of temperature for a mixed crystal of Pb1-xCaxTiO3 close to the tricritical pointdx (x = 0.4). This calculation of the spontaneous polarization is performed using the effective field approximation for the dipolar (PbTiO3) and higher order ( quadrupolar and octopolar) interactions for the mixed system of Pb1-xCaxTiO3 at concentrations from x = 0 to x = 0.45.