Phase structure and electrical properties of PSN–PMN–PZ–PT quaternary piezoelectric ceramics near the morphotropic phase boundary

0.06Pb(Sb1/2Nb1/2)O3–0.06Pb(Mn1/3Nb2/3)O3–0.88Pb(ZrxTi1−x)O3 (PSN–PMN–PZ–PT) quaternary piezoelectric ceramics with varying Zr/Ti ratios located near the morphotropic phase boundary (MPB) were prepared by powder solid-state reaction. The phase structure, dielectric and piezoelectric properties and temperature stability of the systems were investigated. In the present system the MPB, in which the tetragonal and rhombohedral phases coexist, is in a composition range of 0.49