Тип публикации: статья из журнала
Год издания: 2018
Идентификатор DOI: 10.1016/j.ceramint.2017.10.082
Ключевые слова: Dielectric properties (c), Electrical properties (c), Ferroelectric properties (c), Impedance (c), Thermopower
Аннотация: The ferroelectric properties of bismuth pyrostannate Bi2(Sn0.85Cr0.15)2O7 in the high-temperature region are established. The linear thermal expansion coefficient, electrical resistance, impedance, I−V characteristics, capacitance, loss-angle tangent, charge, and thermopower of the investigated material are measured in the temperatПоказать полностьюure range of 300−700 K at frequencies of 102−106 Hz. Anomalies of the thermal expansion coefficient and hodograph spectrum variation in the region of polymorphic phase transitions are observed. The high resistance and change of the hopping conductivity for the tunnel-emission are found. The hysteresis in the electric field dependence of polarization is established. The change in the thermopower sign with temperature is revealed. The obtained experimental data are explained in the framework of the model of migration polarization by charged chromium ions. © 2017 Elsevier Ltd and Techna Group S.r.l.
Журнал: Ceramics International
Выпуск журнала: Vol. 44, Is. 2
Номера страниц: 1614-1620
ISSN журнала: 02728842
Издатель: Elsevier Ltd