Orientation dependence of the properties of PZN-4.5%PT relaxor single crystals

T. Liu; C. S. Lynch

doi:10.1117/12.606031

16 May 2005 Orientation dependence of the properties of PZN-4.5%PT relaxor single crystals

T. Liu, C. S. Lynch

Proceedings Volume 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics; (2005) https://doi.org/10.1117/12.606031
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2005, San Diego, California, United States

Abstract

Relaxor ferroelectric PZN-xPT and PMN-xPT single crystals exhibit excellent electromechanical coupling properties that depend on crystallographic orientations. In this study compressive stress and electric field were applied to relaxor single crystals [Pb(Zn_1/3Nb_2/3)O₃]_0.955-[PbTiO₃]_0.045 (PZN-4.5%PT) in a series of crystal orientations between <001> and <111>, and the corresponding strain and electric displacement were measured. It was found that as the angle of the orientation cut is rotated from <001> to <111>, the piezoelectric coefficient d33 drops and hysteresis increases dramatically. A crystal variant based approach was used to model the piezoelectric coefficients and remnant electric displacement. The bipolar electro-mechanical response of these crystals is presented. Observed hysteresis and nonlinear phenomena related to polarization reorientation and phase transitions is discussed. In actuator design and performance control, these results give a guideline regarding appropriate external fields in order to prevent depolarization, heat generation and damage.

Citation Download Citation

T. Liu and C. S. Lynch "Orientation dependence of the properties of PZN-4.5%PT relaxor single crystals", Proc. SPIE 5761, Smart Structures and Materials 2005: Active Materials: Behavior and Mechanics, (16 May 2005); https://doi.org/10.1117/12.606031

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