用于100 kHz-10 MHz换能器的场致压电材料

Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics Pub Date : 1994-08-07 DOI:10.1109/ISAF.1994.522378

J. Fielding, S. Jang, T. Shrout

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引用次数: 1

摘要

研究了几种电致伸缩材料作为高频换能器的候选材料。研究的家族包括(1-x)Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-(x)PbTiO/sub 3/和PLZT弛豫剂，以及sand sn取代的BaTiO/sub 3/正常铁电体。在100 kHz到5 MHz的频率范围内表征了材料的介电、压电和弹性特性。在几种材料中观察到的机电和弹性特性的大幅度和e场可调性可能为几种新的换能器应用提供机会，例如生物医学成像和非破坏性评估。

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Field-induced piezoelectric materials for 100 kHz-10 MHz transducer applications

Several electrostrictive materials were investigated as candidates for high frequency transducer applications. Families investigated included (1-x)Pb(Mg/sub 1/3/Nb/sub 2/3/)O/sub 3/-(x)PbTiO/sub 3/ and PLZT relaxors, and Srand Sn-substituted BaTiO/sub 3/ normal ferroelectrics. The field dependent dielectric, piezoelectric and elastic properties were characterized at frequencies between 100 kHz and 5 MHz. The large magnitude and E-field tunability of the electromechanical and elastic properties observed in several of the materials may present opportunities for several new transducer applications, such as biomedical imaging and non-destructive evaluation.

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Proceedings of 1994 IEEE International Symposium on Applications of Ferroelectrics

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