Title :
Application of Pb[(Zn13/Nb23/)0.91Ti0.09]O3 single crystal with giant k31 mode to piezoelectric bimorph
Author :
Ogawa, Toshio ; Sakai, Mitsugu ; Yamada, Takahiro
Author_Institution :
Dept. of Electr., Electron. & Information Eng., Shizuoka Inst. of Sci. & Technol., Japan
Abstract :
Piezoelectric unimorphs and bimorphs were fabricated by utilizing Pb((Zn13/Nb23/)0.91Ti0.09]O3(PZNT91/09) single crystal plates with giant k31 over 80%. The electromechanical coupling factors on bending mode (kb) were 64.7% (PZNT91/09 single crystals) and 20.6% (PZT ceramics) in the case of unimorphs. The kb´s in bimorphs were 69.8% (PZNT91/09 single crystals) and 31.2% (PZT ceramics), respectively. Furthermore, the PZNT91/09 single crystal bimorph showed the superior piezoelectric properties such as three times larger impedance ratio on the resonant and the anti-resonant frequencies. The displacement of the single crystal devices also showed the excellent characteristics in comparison with the one of the PZT ceramic devices.
Keywords :
bending; ferroelectric ceramics; lead compounds; piezoceramics; piezoelectricity; plates (structures); polymorphism; PZT; PZT ceramic devices; PbZrO3TiO3; PbZrO3TiO3NbO3; anti-resonant frequency; bending mode; electromechanical coupling factors; giant k31 mode; impedance ratio; k31; piezoelectric bimorphs; piezoelectric properties; piezoelectric unimorphs; resonant frequency; single crystal devices; single crystal plates; Annealing; Ceramics; Crystals; Ferroelectric materials; Frequency; Impedance; Niobium; Piezoelectric devices; Resonance; Temperature measurement;
Conference_Titel :
Applications of Ferroelectrics, 2004. ISAF-04. 2004 14th IEEE International Symposium on
Print_ISBN :
0-7803-8410-5
DOI :
10.1109/ISAF.2004.1418340
