摘要
The propagation characteristics of shear horizontal waves in[001]𝑑,[011]𝑑and[111]𝑑direction polarized 0.72Pb(Mg_(1/3)Nb_(2/3))O_(3)-0.28PbTiO_(3)(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]𝑑and[111]𝑑poled PMN-0.28PT,but little effect on the band structure of the system containing[001]𝑑poled 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.
作者
WANG Yu-Ling
ZHANG Rui
SUN En-Wei
SONG Wei
CAO Wen-Wu
王玉玲;张锐;孙恩伟;宋伟;曹文武(Condensed Matter Science and Technology Institute,Harbin Institute of Technology,Harbin 150080;Department of Physics,Daqing Normal University,Daqing 163712;Materials Research Institute,The Pennsylvania State University,University Park,Pennsylvania 16802,USA)
基金
Supported by the National Basic Research Program of China under Grant No 2013CB632900,the National Natural Science Foundation of China under Grant No 50602009,Program of the Ministry of Education of China for New Century Excellent Talents in University under Grant No NCET-06-0345,Postdoctoral Science Research Developmental Foundation of Heilongjiang Province under Grant No LBH-Q06068.
