Journal
JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS
Volume 42, Issue 10A, Pages L1152-L1154Publisher
INST PURE APPLIED PHYSICS
DOI: 10.1143/JJAP.42.L1152
Keywords
piezoelectric; single crystal; BiScO3-PbTiO3; ferroelectric Curie temperature; electromechanical coupling factor; coercive field
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Single crystals in the BiScO3-PbTiO3 (BSPT) system were grown using the conventional high temperature solution method. The dielectric, piezoelectric and electromechanical properties along <110> direction were investigated as a function of temperature. The Curie temperature was found to be similar to380degreesC with a rhombohedral-tetragonal phase transformation temperature (TR-T) at 300degreesC. The coercive field for <110> oriented crystals was found to be 15 kV/cm with a piezoelectric coefficient (d(33)) of 650 pC/N. The lateral mode electromechanical coupling factor (k(31)) of <110>/<001> cut was around 75% with a piezoelectric coefficient (d(31)) of -800 pC/N. The dielectric, piezoelectric and electromechanical properties were nearly temperature independent from room temperature to 250degreesC, making BSPT crystals promising for sensor and transducer application.
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