Title :
Photo-acoustic devices using (Pb,La)(Zr,Ti)O3 ceramics
Author :
Chu, Sheng-Yuan ; Uchino, Kenji
Author_Institution :
Imt. Center for Acuators & Transducers, Pennsylvania State Univ., University Park, PA, USA
Abstract :
Photostriction in ferroelectrics arises from a superposition of photovoltaic and inverse piezoelectric effects. This phenomenon provides promise for photo-acoustic devices, when the response has been sufficiently improved. In this paper, B-site donor doping was investigated in (Pb,La)(Zr,Ti)O3 based ceramics with the aim of improving the response speed. Using a PLZT bimorph configuration, a photoacoustic device was fabricated, and the fundamental mechanical resonance was observed under intermittent illumination of purple-color light, having neither electric lead wires nor electric circuit
Keywords :
ferroelectric devices; ferroelectric materials; lanthanum compounds; lead compounds; photoacoustic effect; photovoltaic effects; piezoceramics; piezoelectric devices; B-site donor doping; PLZT; PLZT bimorph configuration; PLZT ceramics; PbLaZrO3TiO3; ferroelectrics; fundamental mechanical resonance; intermittent illumination; inverse piezoelectric effect; photoacoustic device; photostriction; photovoltaic effect; purple-color light; response speed; Ceramics; Doping; Ferroelectric materials; Lead; Lighting; Photovoltaic systems; Piezoelectric effect; Resonance; Solar power generation; Wires;
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.1994.522476
