掺锶PMT-PT固溶体陶瓷的介电、压电和热释电性能

Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1994-08-07 DOI:10.1109/ISAF.1994.522499

J. Jung, Y. Park, S. Choi

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引用次数: 0

摘要

研究了0.65(Pb/sub - 1-x/Sr/sub -x/)(Mg/sub - 1/3/Ta/sub - 2/3/)O/sub - 3/-0.35PbTiO/sub - 3/ (0/spl les/x/spl les/0.12)固溶体(PMT-PT)的介电、压电和热释电性能。测定了极化陶瓷样品的介电常数和损耗。测量了陶瓷中不同成分的机电耦合系数和压电d/sub 33/常数。用静态Byer-Roundy法测量了热释电系数和自发极化随温度的变化。与未掺杂的PMT-PT陶瓷相比，掺sr的PMT-PT陶瓷的介电常数、压电d/sub 33/常数和热释电系数均较大。随着少量SrCO/sub / 3的增加，转变温度不断向较低温度移动。

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Dielectric, piezoelectric, and pyroelectric properties of Sr-doped PMT-PT solid solution ceramics

Dielectric, piezoelectric and pyroelectric properties of 0.65(Pb/sub 1-x/Sr/sub x/)(Mg/sub 1/3/Ta/sub 2/3/)O/sub 3/-0.35PbTiO/sub 3/ (0/spl les/x/spl les/0.12) solid solution near the morphotropic phase boundary (PMT-PT) have been investigated. Dielectric constant and loss of poled ceramic samples were determined. The electromechanical coupling factor and piezoelectric d/sub 33/ constant were measured for various compositions in the ceramics. The pyroelectric coefficient and spontaneous polarization were measured by the static Byer-Roundy method as a function of temperature. The values of dielectric constant, piezoelectric d/sub 33/ constant and pyroelectric coefficient for Sr-doped PMT-PT are larger compared to the values observed for undoped PMT-PT ceramics. Transition temperature is continuously shifted to lower temperature with increase of a small amount of SrCO/sub 3/.

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Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics

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