Magnetic and Dielectric Proprieties of Multiferroic (1-x)Pb(Fe2/3W1/3)O-3-xPbTiO(3) Ceramics Prepared Via a Modified Two-stage Solid-state Reaction

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Multiferroic Pb(Fe2/3W1/3)O-3-PbTiO3 (PFW-PT) ceramics were synthesized via a modified two-stage solid-state reaction. This method utilized Fe2WO6, prepared at a first-stage, which was subsequently reacted with a stoichiometric amount of PbO and TiO2 at the second stage. This procedure efficiently suppressed the formation of lead tungstates and leads to getting dense ceramics. Electric and dielectric properties of (1-x)Pb(Fe2/3W1/3)O-3-xPbTiO(3) solid solutions were investigated as a function of the frequency and temperature. All samples present density higher than 96% of the theoretical one, low percentage of pyrochlore phase (<2%) and relatively high electrical resistivity (