Transverse Piezoelectric Properties of xBiInO3-(1-x)PbTiO3 Thin Films
SUN Kexue1,2, CHANG Yuexin1, CHENG Xiefeng1,2
1 College of Electronic and Optical Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023; 2 Jiangsu Province Engineering Laboratory of RF Integration & Micropackage, Nanjing 210023
Abstract: In recent years, the application of piezoelectric films in surface acoustic waves and piezoelectric devices has received extensive attention and research. This paper focuses on the transverse piezoelectric properties of La doping xBiInO3-(1-x)PbTiO3 thin films. The effective transverse piezoelectricities of xBiInO3-(1-x)PbTiO3 films were studied experimentally by multilayer cantilevers. Under the applied sinusoidal voltage, the tip vibration amplitudes of the xBiInO3-(1-x)PbTiO3 multilayer cantilevers were measured experimentally by laser Doppler vibrometer, and the effective transverse piezoelectric coefficients of the films with different x and La doping can be evaluated according to the theory of Euler-Bernoulli cantilever and piezoelectric equations. Therefore, the optimized properties of the films can be obtained by properly controlling La doping contents.
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