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Orientation dependence of coupling between Lamb and shear horizontal waves in (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 single crystal plates

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3 Author(s)
Chen, Chuanwen ; Dept. of Phys., Northeast Forestry Univ., Harbin, China ; Zhang, Rui ; Cao, Wenwu

The orientation dependence of coupling between Lamb and shear horizontal (SH) waves in [001]c and [011]c poled (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-xPT) single crystal plates has been studied theoretically. For a [001]c polarized PMN-PT crystals plate there is no coupling between Lamb and SH waves when thetas = npi/4 (n = 0,1, 2, ...),and the strongest coupling occurs when thetas = (2n +1)pi/8 . For a [011]c polarized PMN-PT crystal plate, the decoupling and strongest coupling happen when thetas = npi/2 and thetas = (2n +1)pi/4 , respectively. Guided wave propagation for coupled and decoupled cases and for symmetric and antisymmetric modes are calculated explicitly. The results are useful for the design of guided wave devices using PMN-xPT single crystals.

Published in:

Applications of Ferroelectrics, 2009. ISAF 2009. 18th IEEE International Symposium on the

Date of Conference:

23-27 Aug. 2009