Title :
Importance of a High Shear Coefficient to the Piezoelectric Properties of Domain-Engineered Crystals and Ceramics
Author :
Davis, Matthew ; Budimir, Marko ; Damjanovic, Dragan ; Setter, Nava
Author_Institution :
Ecole Polytech. Federale de Lausanne, Lausanne
fDate :
July 30 2006-Aug. 3 2006
Abstract :
The importance of a high shear coefficient d15 to the piezoelectric properties of domain-engineered perovskite crystals is discussed. The terms "rotator" and "extender" are introduced to differentiate the contrasting behaviors of 4mm BaTiO3 and PbTiO3. In "rotator" ferroelectrics, where d15 is high, polarization rotation is the dominant mechanism of piezoelectric response; in "extender" ferroelectrics d15 is low and the collinear effect dominates. Large shear coefficients can be expected close to ferroelectric-ferroelectric phase transitions; this includes morphotropic phase boundaries. The differing piezoelectric properties of rotator and extender domain-engineered single crystals are discussed.
Keywords :
barium compounds; electric domains; ferroelectric ceramics; ferroelectric transitions; lead compounds; piezoelectricity; BaTiO3; PbTiO3; ceramics; domain-engineered perovskite crystals; ferroelectric-ferroelectric phase transitions;; morphotropic phase boundaries; piezoelectric properties; polarization; rotator ferroelectrics; shear coefficient; Anisotropic magnetoresistance; Ceramics; Crystalline materials; Crystals; Ferroelectric materials; Laboratories; Piezoelectric effect; Piezoelectric polarization; Temperature; Titanium compounds; Piezoelectric anisotropy; domain engineering;
Conference_Titel :
Applications of ferroelectrics, 2006. isaf '06. 15th ieee international symposium on the
Conference_Location :
Sunset Beach, NC
Print_ISBN :
978-1-4244-1331-7
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2006.4387887
