Title :
5D-5 Tailored Single Crystal Orientations for Improved Tonpilz Transducer Performance
Author :
Snook, Kevin A. ; Rehrig, Paul W. ; Hackenberger, Wesley S. ; Meyer, Richard J., Jr. ; Markley, Douglas
Author_Institution :
TRS Technol., Inc., State College, PA
Abstract :
Various transverse length extensional modes of single crystal piezoelectrics were evaluated for high power capabilities and compared with the longitudinal "33" mode. Both bar and tube geometries, and d31 and d32 piezoelectric modes were explored. The elastic, piezoelectric and dielectric properties were evaluated under dynamic conditions using a matrix of stress, temperature and electric field conditions. Crystallographic orientation significantly affected domain stability; poling along the lang001rang axis showed a higher phase transition point, relative to stress and temperature, than the lang110rang orientation. The optimized transverse mode (d31 ) showed significantly improved properties due to the orthogonal relationship between electric field and pre-stress; strains over 0.2% were recorded
Keywords :
acoustic transducers; crystal orientation; dielectric polarisation; elasticity; phase transformations; piezoelectric materials; Tonpilz transducer; crystallographic orientation; dielectric property; domain stability; elastic property; phase transition point; piezoelectric property; poling; single crystal orientations; single crystal piezoelectrics; transverse length extensional modes; Capacitance; Crystallography; Educational institutions; Geometry; Piezoelectric transducers; Resonance; Resonant frequency; Stability; Stress; Temperature;
Conference_Titel :
Ultrasonics Symposium, 2006. IEEE
Conference_Location :
Vancouver, BC
Print_ISBN :
1-4244-0201-8
Electronic_ISBN :
1051-0117
DOI :
10.1109/ULTSYM.2006.104
