Propagation of Shear Horizontal Waves in Laminated Composites Based on Differently Orientated Poled 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 Single Crystals
WANG Yu-Ling1,2, ZHANG Rui1**, SUN En-Wei1, SONG Wei1, CAO Wen-Wu1,3**
1Condensed Matter Science and Technology Institute, Harbin Institute of Technology, Harbin 150080 2Department of Physics, Daqing Normal University, Daqing 163712 3Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, USA
Abstract：The propagation characteristics of shear horizontal waves in [001]c, [011]c and [111]c direction polarized 0.72Pb (Mg1/3Nb2/3)O3-0.28PbTiO3 (PMN-0.28PT) piezoelectric single crystals/polymer periodic laminated composites are studied by using the global matrix method. The numerical results show that the piezoelectric effect has a significant influence on the bandgap width of the composite structure containing [011]c and [111]c poled PMN-0.28PT, but little effect on the band structure of the system containing [001]c poled single crystal. In addition, the first bandgap (FBG) width of the composite structure depends strongly on the poling directions when the filling fraction of PMN-0.28PT is larger than 0.5, and its FBG starting frequency displays no distinct difference among the three polarization directions at all filling fractions. The reported results provide valuable guidelines for designing filters and transducers made of composite structures containing relaxor-based ferroelectric single crystals.
(Surface states, band structure, electron density of states)
引用本文:
. [J]. 中国物理快报, 2013, 30(9): 96301-096301.
WANG Yu-Ling, ZHANG Rui, SUN En-Wei, SONG Wei, CAO Wen-Wu. Propagation of Shear Horizontal Waves in Laminated Composites Based on Differently Orientated Poled 0.72Pb(Mg1/3Nb2/3)O3-0.28PbTiO3 Single Crystals. Chin. Phys. Lett., 2013, 30(9): 96301-096301.
2013, Vol. 30 
