Determination of the voltage-dependent dielectric properties of piezoelectric materials with a high-voltage/high-power electromechanical impedance analyzer

R. Montes; Kevin E. Castanien; Chen Liang; Mathieu V.D. Bergh

doi:10.1117/12.232125

9 February 1996 Determination of the voltage-dependent dielectric properties of piezoelectric materials with a high-voltage/high-power electromechanical impedance analyzer

R. Montes, Kevin E. Castanien, Chen Liang, Mathieu V.D. Bergh

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Proceedings Volume 2716, Smart Structures and Materials 1996: Smart Materials Technologies and Biomimetics; (1996) https://doi.org/10.1117/12.232125
Event: 1996 Symposium on Smart Structures and Materials, 1996, San Diego, CA, United States

Abstract

The dielectric properties of piezoelectric materials are important in many applications of piezoelectric materials, such as active structural control, underwater sonar, dielectric insulator, etc. The experimental measurement of dielectric properties of materials is usually done using commercial electrical impedance analyzer, LCR meter, or network analyzer, such as an HP 4194 impedance analyzer. The excitation voltage of these commercial analyzers is generally very low, e.g., 1.5 volts rms or under. However, the dielectric properties of piezoelectric materials (both dielectric constant and dielectric loss factor) can be very sensitive to the level of applied electric voltage (field). Since virtually all the applications of piezoelectric materials are under high field, it is important to develop measurement techniques to determine the voltage dependent dielectric material properties. This paper introduces a high- voltage/high-power electromechanical impedance analyzer developed based on a commercial electrical power analyzer/phase angle multimeter. The developed analyzer is then used to determine the dielectric constant and dielectric loss factor of G1195 PZT. The measurement results, dielectric constant and loss factor as a function of applied electric field, frequency, and ambient temperatures, are presented in the paper.

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R. Montes, Kevin E. Castanien, Chen Liang, and Mathieu V.D. Bergh "Determination of the voltage-dependent dielectric properties of piezoelectric materials with a high-voltage/high-power electromechanical impedance analyzer", Proc. SPIE 2716, Smart Structures and Materials 1996: Smart Materials Technologies and Biomimetics, (9 February 1996); https://doi.org/10.1117/12.232125

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KEYWORDS

Dielectrics

Actuators

Ferroelectric materials

Temperature metrology

Electromechanical design

Power supplies

Amplifiers

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