Ferroelectrics · 1984 · 113 citations · 1 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsMaterials CharacterizationElectrical Properties Of CeramicsFerroelectric CeramicsFerroelectric MaterialsThermal Properties Of CeramicsFerroelectric Phase TransitionsPyroelectric CeramicsPyroelectric DetectorsPyroelectric MaterialsPyroelectric PropertiesPyroelectricityTemperature DependenceTemperature Dependence Measurement
The temperature dependence of the pyroelectric coefficient γd of (Na½Bi½)TiO3 ceramics has been measured. It was found that this crystal is a perspective material for using as a sensitive element of the pyroelectric radiation detectors steadily working in the temperature range of ∽ 20—60°C (γd = 2.5 ' 10-8C cm-2 °C-1; γd/ε = 4.0 ' 10-10C cm-2 °C-1. By means of the radiation technique of ε determination for the first time a characteristic of the ferroelectric phase transition dependence ε(T) with a pronounced maximum of ε at Tc = 210°C has been obtained.
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