Dielectric and Ferroelectric Properties of Ceramics in the Pb(Zn _1/3 Nb _2/3 )O ₃ ‐BaTiO ₃ ‐PbTiO ₃ System

Abstract

The use of Pb(Zn 1/3 Nb 2/3 )O 3 ceramics is restricted by the formation of a pyrochlore phase detrimental to both dielectric and piezoelectric properties. Recently it has been shown that a 6 mol% addition of BaTiO 3 to PZN suppresses the formation of pyrochlore phase. Phase relations and dielectric properties of ceramics in the PZN‐BT‐PT system are reported here. Compositions with the perovskite structure, having high dielectric constant and low temperature coefficient of capacitance, have been identified.