Title :
Transverse surface waves in piezoelectric ceramic/metal coupled media
Author :
Qian, Zheng-hua ; Jin, Feng ; Lu, Tian-Jian ; Hirose, Sohichi
Author_Institution :
Dept. of Mech. & Environ. Inf., Tokyo Inst. of Technol., Tokyo, Japan
Abstract :
Theory of the propagation of transverse surface waves in piezoelectric ceramic/metal coupled media is developed. Dispersion equations relating phase velocity to material constants for the existence of various modes are obtained in simple mathematic form for a piezoelectric material of class 6 mm. Piezoelectricity allows a nonleaky but dispersive wave of one or two modes to exist under conditions when the bulk-shear-wave velocity in the layer is greater than that in the substrate. The study extends the regime of transverse surface waves and may lead to potential applications to acoustic wave devices.
Keywords :
elastic waves; lead compounds; permittivity; piezoceramics; steel; FeCJk; PZT-4 ceramic layer; PZT-FeCJk; acoustic wave devices; bulk-shear-wave velocity; dispersion equations; permittivity; piezoelectric ceramic-metal coupled medium; piezoelectricity; steel substrate; transverse surface wave propagation; Acoustic waves; Ceramics; Dispersion; Equations; Informatics; Inorganic materials; Piezoelectric materials; Surface acoustic wave devices; Surface waves; Vibrations;
Conference_Titel :
Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the
Conference_Location :
Xian
Print_ISBN :
978-1-4244-4970-5
Electronic_ISBN :
1099-4734
DOI :
10.1109/ISAF.2009.5307551
