Abstract
The piezoelectric properties of (1-x-y)PbZrO3-xPbTiO3-yPb(Ni1/3Nb2/3)O3 ceramics were investigated. Specimens with a large Pb(Ni1/3Nb2/3)O3 content, which have compositions close to the triple point, show small g33 and d33×g33 values because of their large εT33/ε0. These values increased with a decrease in y (amount of Pb(Ni1/3Nb2/3)O3) and the specimen with x=0.39 and y=0.29 showed the largest g33 of 43×10−3 V·m/N and d33×g33 of 25.2×10−12m2/N. Cantilever-type energy harvesters were fabricated using specimens with 0.38≤x≤0.41 and y=0.29. The output power densities of the energy harvesters were related to the d31×g31×k312 value of the piezoelectric ceramics. The energy harvester fabricated using a specimen with x=0.39 and y=0.29, which has a maximum d31×g31×k312 value, showed the maximum output power density of 1.01mW/cm3.
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