Effect of substrate bending on the piezoelectric measurement of PZT thin film

Xiaohui Xu; Jianhong Tang; Liangna He

doi:10.1117/12.832100

18 May 2009 Effect of substrate bending on the piezoelectric measurement of PZT thin film

Xiaohui Xu, Jianhong Tang, Liangna He

Proceedings Volume 7284, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems; 728415 (2009) https://doi.org/10.1117/12.832100
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

Abstract

Bonding conditions between PZT thin film and sample holder greatly affect the strain measurement of the PZT sample. The influence of various bonding conditions on the measured displacement were analyzed using finite element analysis (FEA). One-end fixed sample induces the maximum bending displacement. Experiments were performed on sol-gel derived PZT thin film. The voltage-displacement curve and "butterfly" loop were measured using laser Doppler method with phase detection. Experimental results agreed well with the simulated ones. The measured frequency dependence of piezoelectric response of PZT thin film indicated that, if the operating frequency was lower than 2 kHz, good bonding effect could be obtained when the entire back surface of the sample was glued to a rigid supporter using epoxy resin. A simple bonding model which considered the adhesives as a spring was used to estimate the frequency response of PZT thin film sample.

Citation Download Citation

Xiaohui Xu, Jianhong Tang, and Liangna He "Effect of substrate bending on the piezoelectric measurement of PZT thin film", Proc. SPIE 7284, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Design, Manufacturing, and Testing of Micro- and Nano-Optical Devices and Systems, 728415 (18 May 2009); https://doi.org/10.1117/12.832100

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KEYWORDS

Ferroelectric materials

Thin films

Finite element methods

Doppler effect

Electrodes

Sol-gels

Epoxies

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