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

Volume

2

fYear

2000

fDate

2000

Firstpage

537

Abstract

Samples were cut from boules (φ40×80mm) of Pb(Mg_1/3Nb_2/3)O₃-PbTiO₃ (PMN-PT) grown by a modified Bridgman method. The composition dependence trends of piezoelectric constant d₃₃ and coupling factor k_t, are given. For the composition PMN/PT=67/33, ε~5000, tg δ <1%, d₃₃~2000 pC/N, k_t~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(Mg_1/3Nb_2/3)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;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectrics, 2000. ISAF 2000. Proceedings of the 2000 12th IEEE International Symposium on

Conference_Location

Honolulu, HI

ISSN

1099-4734

Print_ISBN

0-7803-5940-2

Type

conf

DOI

10.1109/ISAF.2000.942377

Filename

942377