Title :
Piezoelectric composites: thermal stabilization and improvement of properties
Author :
Syrkin, L.N. ; Feoktistova, N.N. ; Kancherova, E.T.
Author_Institution :
Res. & Dev. Inst. Morphizpribor, Acad. of Sci., St. Petersburg, Russia
Abstract :
Piezoelectric composites containing modified crystals SbSJ as an active phase have very high volume (“hydrostatic”) sensitivity and an acoustic impedance close to that of water. But the dependence of piezoelectric voltage coefficient gh on temperature T is rather strong. Composites based on the PZT-ceramics, on the other hand, have high thermal stability but comparatively low values of gh. The aim of this research is improvement of piezoelectric transducers made of both types of composites
Keywords :
Poisson ratio; acoustic impedance; antimony compounds; composite materials; lead compounds; piezoceramics; piezoelectric materials; piezoelectric transducers; thermal stability; PZT-ceramics; PbZrO3TiO3Jk; Poisson ratio; SbSI modified crystals; acoustic impedance; high thermal stability; hydrostatic sensitivity; piezoelectric composites; piezoelectric transducers; piezoelectric voltage coefficient; properties; thermal stabilization; Capacitance; Capacitors; Crystals; Piezoelectric transducers; Temperature dependence; Temperature sensors; Voltage;
Conference_Titel :
Applications of Ferroelectrics, 1994.ISAF '94., Proceedings of the Ninth IEEE International Symposium on
Conference_Location :
University Park, PA
Print_ISBN :
0-7803-1847-1
DOI :
10.1109/ISAF.1994.522335
