Shear piezoelectric coefficients of PZT, LiNbO3 and PMN-PT at cryogenic temperatures

27th International Conference on Low Temperature Physics

Bukhari, Syed^1 ; Islam, Md^1 ; Haziot, Ariel^1,2 ; Beamish, John^1

Department of Physics, University of Alberta, Edmonton

AB

T6G 2E1, Canada^1

Laboratoire de Physique Statistique de l'Ens, CNRS, Universites Pierre-et-Marie-Curie and Denis-Diderot, rue Lhomond, Paris cedex 05

75231, France^2

关键词: Cryogenic applications;    Cryogenic temperatures;    Lead zirconium titanate;    Piezoelectric coefficient;    Shear coefficient;    Shear piezoelectric coefficients;    Temperature dependence;    Temperature values;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/568/3/032004/pdf
DOI  :  10.1088/1742-6596/568/3/032004

来源: IOP

【 摘 要 】

Piezoelectric transducers are used to detect stress and to generate nanometer scale displacements but their piezoelectric coefficients decrease with temperature, limiting their performance in cryogenic applications. We have developed a capacitive technique and directly measured the temperature dependence of the shear coefficient d15for ceramic lead zirconium titanate (PZT), 41° X-cut lithium niobate (LiNbO3) and single crystal lead magnesium niobium-lead titanate (PMN-PT). In PZT, d15decreases nearly linearly with temperature, dropping by factor of about 4 by 1.3 K. LiNbO3 has the smallest room temperature d15, but its value decreased by only 6% at the lowest temperatures. PMN-PT had the largest value of d15 at room temperature (2.9 × 10-9m/V, about 45 times larger than for LiNbO3) but it decreased rapidly below 75 K; at 1.3 K, d15was only about 8% of its room temperature value.