All of the dielectric constants, piezoelectric strain constants, elastic compliance constants and some electroelastic coupling factors of GdCa4O(BO3 )3 singe crystal have been determined for the first time.
All of the piezoelectric strain constants,piezoelectric stress constants,elastic compliance constants,elastic stiffness constants and dielectric constants of YCaO(BO 3) 3 single crystal have been determined for the first time.
In this paper,the relative dielectric constants,the piezoelectric strain constants and the elastic compliance constants of La_3Al_(0.5)Ga_(0.5)Ta_(0.5)O_(14)single crystal have been determined by the LCR bridge,interferometric method and resonant method respectively,and compare these parameters with that of La_3Ga_(5.5)Ta_(0.5)O_(14) crystal.
A dynamic dilatometer for measuring piezoelectric strain constants of insulators and semiconductors is described.
The results show that the piezoelectric strain constants and electromechanical coupling factors of SGG single crystal are higher than those of LGS single crystals making it a potential substrate material for surface-acoustic wave applications.
The piezoelectric strain constants of KTP crystal have been measured by inter-ferometric method.The results obtained are d_(31)=-1.5,d_(32)=-2.1,d_(33)=4.6,d_(24)=4.0,d_(15)=9.3×10~(-12)C/N.
The piezoelectric strain constants of K_(0. 9)Li_(0. 1)(Ta_(0.5)Nb_(0. 5))O_3 crystal have been measured using a quasi-static d_(33) measurer in conjunction with interferornetric method. The results obtained are d_(33)=86.0,d_(31)= 29.5.d_(15)= 112.9×10￣(-12)C/N.