Abstract
In this study, in order to develop piezoelectric ceramics with high piezoelectric d31 coefficient and high Curie temperature (Tc), Pb(Mg1/2W1/2)0.03(Ni1/3Nb2/3)0.09(Zr0.5Ti0.5)0.88O3 ceramics doped with sintering aids were fabricated using a columbite precursor method. The crystal structure, dielectric and piezoelectric properties were investigated as a function of calcination temperature. At the sintering temperature of 920°C, the optimal values of density=7.83(g/cm3), piezoelectric coefficient(d31)=263pC/N, piezoelectric coefficient(d33)=620pC/N, planar electromechanical coupling coefficient (kp)=0.689, mechanical quality factor (Qm)=100, dielectric constant(εr)=2524 and Curie temperature (Tc)=340°C were obtained from the ceramics with the two step calcination temperature of 1st=1130°C, 2nd=780°C, respectively, for haptic actuator application.
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