Experimental determination of SAW properties of 5 standard piezoceramics

Bulk elastic, piezoelectric and dielectric constants of four lead zirconate titanate piezoceramics, Pz24, Pz26, Pz27 and Pz28, and a modified lead titanate, Pz34, are measured and used to theoretically compute the effective permittivity curve of each material from which the SAW properties are deduce...

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Main Authors: Feuillard, G., Lethiecq, M., Janin, Y., Alemany, C., Jimenez, B., Millar, C., Wolny, W.
Format: Conference Proceeding
Language:English
Subjects:
Curve fitting
Mechanical factors
Permittivity
PZT materials/devices
Surface acoustic wave delay lines
Surface acoustic wave materials
Surface acoustic wave transducers
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container_start_page 447
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creator Feuillard, G.
Lethiecq, M.
Janin, Y.
Alemany, C.
Jimenez, B.
Millar, C.
Wolny, W.
description Bulk elastic, piezoelectric and dielectric constants of four lead zirconate titanate piezoceramics, Pz24, Pz26, Pz27 and Pz28, and a modified lead titanate, Pz34, are measured and used to theoretically compute the effective permittivity curve of each material from which the SAW properties are deduced. In parallel, experimental measurements of the SAW properties are carried out by using a curve fitting algorithm on the real and imaginary parts of the electrical input impedance of an unapodised single electrode SAW transducer. The SAW propagation losses are also measured using a SAW delay line. A free surface wave velocity varying from 2100 m/s to 2500 m/s and a surface wave coupling coefficient k s 2 between 1.5% and 4% are found. Both determination methods of SAW properties are discussed in terms of sensitivity and the potential of piezoceramics for SAW applications is examined
doi_str_mv 10.1109/ULTSYM.1994.401627
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subjects Curve fitting
Mechanical factors
Permittivity
PZT materials/devices
Surface acoustic wave delay lines
Surface acoustic wave materials
Surface acoustic wave transducers
title Experimental determination of SAW properties of 5 standard piezoceramics
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