Effect of PbNi1/3Nb2/3O3 on the Dielectric and Piezoelectric Properties of Multicomponent Solid Solutions Based on PbMg1/3Nb2/3O3–PbTiO3
The effect of PbNi1/3Nb2/3O3 addition on the dielectric and piezoelectric responses of the mPbMg1/3Nb2/3O3–nPbNi1/3Nb2/3O3–yPbZn1/3Nb2/3O3–xPbTiO3 ceramic system doped with barium is investigated. It is found that raising the concentration of PbNi1/3Nb2/3O3 results in a sharp drop in the maximum values of piezoelectric module |d31| (by almost half, from 321 to 186 pC/N−1), shifting the maximum of |d31|(x) toward a tetragonal phase (from x ≈ 0.300 to x ≈ 0.325) and increasing the relative permittivity throughout the range of x variation (at low x, from 11 000 to 16 500). Possible reasons for the observed changes are discussed.