Time and frequency-dependence of the electric field-induced phase transition in BaTiO3-BiZn1/2Ti1/2O3

Thanakorn Iamsasri, Giovanni Esteves, Hyeokmin Choe, Marco Vogt, Sasiporn Prasertpalichat, David P. Cann, Semën Gorfman, Jacob L. Jones

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ملخص

The time and frequency dependence of the electric field-induced phase transition in BaTiO3-BiZn1/2Ti1/2O3 was studied using in situ X-ray diffraction. The kinetics of the field-induced phase transition between cubic and tetragonal phases was described using a modified Kolmogorov-Avrami-Ishibashi (KAI) equation. Unlike previous works, for which some assumptions (e.g., unimodal and Gaussian) on the distribution of transition rates are needed, the present work utilized Bayesian inference and a Markov chain Monte Carlo algorithm to obtain the distribution of transition rates empirically without a priori assumption on the distribution. The results show that the transition rate coefficient increases as the frequency of applied field increases. The mean value of exponent n in the modified-KAI equation was close to 1, implying that the field-induced phase transition is site saturated and the growth of the induced phase occurred primarily from the surface.

اللغة الأصليةالإنجليزيّة
رقم المقال064104
دوريةJournal of Applied Physics
مستوى الصوت122
رقم الإصدار6
المعرِّفات الرقمية للأشياء
حالة النشرنُشِر - 14 أغسطس 2017

All Science Journal Classification (ASJC) codes

  • !!General Physics and Astronomy

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