Experimental Investigation of Rate-Dependent Inner Hysteresis Loops in PZT

AbstractThe rate-dependence of piezoelectric materials resulting from the kinetics of domain switching is an important factor that needs to be included in realistic modeling attempts. This paper provides a systematic study of the rate-dependent hysteresis behavior of a commercially available PZT stack actuator. Experiments covering full as well as minor loops are conducted at different loading rates with polarization and strain recorded. In addition, the creep behavior at different constant levels of the electric field is observed. This provides evidence of kinetics being characterized by strongly varying relaxation times that can be associated with different switching mechanisms.

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A Second Generation of Numerical Implementation of Nonlinear Piezoelectric Models in Commercially Available Tools

Volume 3: 28th Computers and Information in Engineering Conference, Parts A and B ◽

10.1115/detc2008-49066 ◽

2008 ◽

Author(s):

M. A. Siddiq Qidwai ◽

V. G. DeGiorgi

Keyword(s):

Finite Element ◽

Constitutive Model ◽

Domain Switching ◽

Piezoelectric Materials ◽

Nonlinear Behavior ◽

Material Behavior ◽

Device Performance ◽

Performance Improvements ◽

Rate Dependent ◽

Theoretical Developments

Domain switching based nonlinear behavior is characteristic of relaxor-type piezoelectric material such as PMN-PT single crystals. These materials offer significant device performance improvements over traditional polycrystalline piezoelectric materials such as PZT-5A. The promise of increased performance of these materials has led to work in development of constitutive characterizations so that material behavior under load and material failure mechanisms can be understood and predicted. However, there is a gap between development of such theoretical developments and in workable manifestations available as part of commercial finite element codes for use in device design. In the current work, the authors extend previously documented implementation of a macro-mechanical constitutive model which addresses domain switching, into a commercially available finite element code. A rate dependent version of the constitutive model has been successfully realized and used to reproduce a variety of piezoelectric constitutive behaviors.

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Computational modeling of rate-dependent domain switching in piezoelectric materials

European Journal of Mechanics - A/Solids ◽

10.1016/j.euromechsol.2006.01.006 ◽

2006 ◽

Vol 25 (6) ◽

pp. 950-964 ◽

Cited By ~ 22

Author(s):

A. Arockiarajan ◽

A. Menzel ◽

B. Delibas ◽

W. Seemann

Keyword(s):

Computational Modeling ◽

Domain Switching ◽

Piezoelectric Materials ◽

Rate Dependent ◽

Dependent Domain

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Evolution of electromechanical properties in Fe-doped (Pb,Sr)(Zr,Ti)O3 piezoceramics

Journal of Advanced Ceramics ◽

10.1007/s40145-021-0460-7 ◽

2021 ◽

Vol 10 (3) ◽

pp. 587-595

Author(s):

Chuan Chen ◽

Yan Wang ◽

Zong-Yue Li ◽

Chun Liu ◽

Wen Gong ◽

...

Keyword(s):

Domain Switching ◽

Piezoelectric Materials ◽

Ferroelectric Properties ◽

Hysteresis Loops ◽

Bias Field ◽

Strain Effect ◽

Recoverable Strain ◽

Cubic Symmetry ◽

Defect Dipole ◽

Field Cycling

AbstractDefects in acceptor-doped perovskite piezoelectric materials have a significant impact on their electrical properties. Herein, the defect mediated evolution of piezoelectric and ferroelectric properties of Fe-doped (Pb,Sr)(Zr,Ti)O3 (PSZT-Fe) piezoceramics with different treatments, including quenching, aging, de-aging, and poling, was investigated systematically. Oxygen vacancies with a cubic symmetry are preserved in the quenched PSZT-Fe ceramics, rendering them robust ferroelectric behaviors. In the aged PSZT-Fe polycrystals, defect dipole between Fe dopant and oxygen vacancy has the same orientation with spontaneous polarization PS, which enables the reversible domain switching and hence leads to the emergence of pinched polarization hysteresis and recoverable strain effect. And the defect dipoles can be gradually disrupted by bipolar electric field cycling, once again endowing the aged materials with representative ferroelectric properties. For the poled PSZT-Fe polycrystals, the defect dipoles are reoriented to be parallel to the applied poling field, and an internal bias field aligning along the same direction emerges simultaneously, being responsible for asymmetric hysteresis loops.

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