Title :
Dielectric and piezoelectric properties of PMN-PT single crystals grown by Bridgman method
Author :
Wang, Ping-chu ; Luo, Hao-Su ; Pan, Xiao-ming ; Li, Dong-lin ; Yin, Zhi-Wen
Author_Institution :
Inst. of Ceramics, Acad. Sinica, Shanghai, China
Abstract :
Samples were cut from boules (φ40×80mm) of Pb(Mg1/3 Nb2/3)O3-PbTiO3 (PMN-PT) grown by a modified Bridgman method. The composition dependence trends of piezoelectric constant d33 and coupling factor kt, are given. For the composition PMN/PT=67/33, ε~5000, tg δ <1%, d33~2000 pC/N, kt~0.6-0.62, k33~0.90-0.94 were achieved. Aging and d33 fluctuations were also briefly discussed. The above features and the feasibility of enlargements in crystal size and production scale indicate that PMN-PT single crystals are promising candidates for actuators and transducers of the new generation
Keywords :
ageing; crystal growth from melt; ferroelectric materials; fluctuations; lead compounds; piezoelectric materials; stoichiometry; PMN-PT; PMN-PT single crystals; PMN-PbTiO3; Pb(Mg1/3Nb2/3)O3-PbTiO3 ; PbMgO3NbO3-PbTiO3; actuators; aging; composition; coupling factor; crystal size; fluctuations; modified Bridgman method; piezoelectric constant; piezoelectric properties; transducers; Acoustic measurements; Actuators; Aging; Bars; Ceramics; Crystals; Dielectric measurements; Fluctuations; Impedance; Production;
Conference_Titel :
Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
0-7803-5940-2
DOI :
10.1109/ISAF.2000.942377
