Title :
Surface acoustic wave propagation properties of the relaxor ferroelectric PMN-PT single crystal
Author :
Kook Hyun Choi ; Jin Ho Oh ; Hyeong Joon Kim ; Jin Yong Kim
Author_Institution :
Sch. of Mater. Sci. & Eng., Seoul Nat. Univ., South Korea
Abstract :
The characteristics of acoustic waves propagation in the single crystal lead magnesium niobate-lead titanate(PMN-PT) are theoretically and experimentally investigated. This single crystal has ultrahigh piezoelectric coefficient (d33>2000 pC/N) and electromechanical coupling coefficient( k33>90%). High coupling single crystal can be used as the wide band filter devices. PMN-PT is a solid solution of PMN and PT. Hence, by PT compositon control material properties can be changed for the better device performance. Using Bridgman method we prepared PMN-PT single crystals with 33% PT content respectively. We investigated SAW velocities of these crystals experimentally. The results agreed with the calculations based on reported material constants
Keywords :
crystal growth from melt; ferroelectric materials; lead compounds; piezoelectric materials; surface acoustic wave filters; surface acoustic waves; Bridgman method; PMN-PT single crystal; PMN-PbTiO3; PbMgO3NbO3-PbTiO3; SAW velocity; compositon control; electromechanical coupling coefficient; piezoelectric coefficient; relaxor ferroelectric; solid solution; surface acoustic wave propagation; wideband filter; Acoustic propagation; Acoustic waves; Crystals; Filters; Magnesium; Material properties; Solids; Surface acoustic waves; Titanium compounds; Wideband;
Conference_Titel :
Ultrasonics Symposium, 2001 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-7177-1
DOI :
10.1109/ULTSYM.2001.991600
