Title :
Domain wall evolution laws of piezoceramic materials under mechanical loading
Author :
Domenjoud, Mathieu ; Bustillo, Julien ; Lethiecq, Marc ; Levassort, F.
Author_Institution :
GREMAN, Univ. of Tours, Blois, France
Abstract :
The purpose of this study is to model the nonlinear hysteretic behavior of piezoceramic materials under mechanical loading to determine associated domain wall evolution laws. The model is constructed by bridging the characteristics of microscopic domain distribution into the macroscopic behavior. Evolutions of the remanent strain and remanent polarization are described by a domain distribution evolution. These variables are used to develop a phenomenological model that is able to reproduce the longitudinal strain and electric displacement in function of uniaxial mechanical loading. Evolutions of domain walls induced by polarization and ferroelastic strain are characterized and discussed for two piezoceramic materials.
Keywords :
barium; dielectric hysteresis; dielectric polarisation; electric domain walls; ferroelasticity; ferroelectric ceramics; ferroelectricity; iron; lead compounds; niobium; piezoceramics; piezoelectricity; PZT:Ba,Fe; PZT:Nb; domain distribution evolution; domain wall evolution laws; electric displacement; ferroelastic strain; longitudinal strain; macroscopic behavior; microscopic domain distribution; nonlinear hysteretic property; phenomenological model; piezoceramic materials; remanent polarization; remanent strain; uniaxial mechanical loading; Ceramics; Load modeling; Loading; Piezoelectric polarization; Strain; Stress; domain wall evolution; hard and soft piezoceramics; mechanical loading; remanent polarization; remanent strain;
Conference_Titel :
Applications of Ferroelectrics, International Workshop on Acoustic Transduction Materials and Devices & Workshop on Piezoresponse Force Microscopy (ISAF/IWATMD/PFM), 2014 Joint IEEE International Symposium on the
Conference_Location :
State College, PA
DOI :
10.1109/ISAF.2014.6922967
