Title :
Piezoelectric properties of KNbO3 in various crystal orientations by finite element analysis
Author :
Yamamoto, Takashi ; Okino, Hirotake ; Matsuzaki, Eiji ; Yamashita, Yuji
Author_Institution :
Dept. of Commun. Eng., Nat. Defense Acad., Yokosuka, Japan
fDate :
28 May-1 June 2002
Abstract :
Cut angles dependence of electromechanical coupling factors in various orientations of KNbO3 single crystal were calculated by finite element analysis. These results were compared with direct calculations using piezoelectric equation and discussed with experimental results. The k11 in a bar was 0.76 at the θ = 40.5° around Y axis (XYt)40.5°. In a thin plate, kt was 0.72 at θ =50° around Y axis (XYI)50°.
Keywords :
dielectric polarisation; finite element analysis; piezoelectric materials; potassium compounds; KNbO3; cut angles dependence; displacement figures; electromechanical coupling factors; finite element analysis; piezoelectric properties; single crystal; various crystal orientations; Acoustic propagation; Acoustic refraction; Acoustic waves; Electrodes; Finite element methods; Impedance measurement; Niobium compounds; Nonlinear equations; Permittivity; Surface acoustic waves;
Conference_Titel :
Applications of Ferroelectrics, 2002. ISAF 2002. Proceedings of the 13th IEEE International Symposium on
Print_ISBN :
0-7803-7414-2
DOI :
10.1109/ISAF.2002.1195882
