The Journal of the Acoustical Society of America · 1952 · 42 citations · 0 references
Natural SciencesMaterials EngineeringMaterials ScienceCeramic MaterialsCeramicsSolid State PhysicsDielectric CeramicsDielectricsFerroelectric CeramicsFerroelectric MaterialsPiezoelectric CeramicsPiezoelectric MaterialsBarium Titanate CeramicsElectrical CeramicsPiezoelectric PropertiesPiezoelectricityTemperature DependenceTemperature StabilityTemperature-dependent StabilityTemperature-stable Dielectrics
Incorporation of CaTiO3 or Y2O3 into BaTiO3 ceramics causes a downward shift of the second transition point, resulting substantial improvement of temperature stability in the normal operating range. Dielectric and electromechanical properties of BaTiO3 ceramics containing CaTiO3, Y2O3, and PbTiO3 are shown from −40° to +120°C. The composition containing 5 weight percent CaTiO3 combines high piezoelectric response with low temperature dependence of operating characteristics.