Processing and electrical properties of Pb(Yb{sub}(1/2)Nb{sub}(1/2))-PbTiO{sub}3 ceramics at the morphotropic phase boundary

摘要

Pb(Yb{sub}(1/2)Nb{sub}(1/2))-PbTiO{sub}3 (PYbN-PT) ceramics at the MPB composition (50:50) with a relative density > 98% were reactively sintered. The ceramic had a remanent polarization of 40 μC/cm{sup}2, a maximum dielectric constant of 23,000 at T{sub}c = 363°C, and a piezoelectric charge coefficient, d{sub}33, of 472 pC/N. These values are higher than the conventionally sintered samples reported in the literature, which makes reactive sintering an attractive process for fabricating PYbN-PT.