Magnetic and ferroelectric phase coexistence in multiferroic PFW-PT ceramics

The multiferroic (1-x)PbFe2/3W1/3O3–xPbTiO3 solid solutions with various compositions x = 0, 0.10, 0.20 and 0.30 were investigated. The features of the relaxor-to-ferroelectric transition with increasing x were discussed based in connection with dielectric and ferroelectric proprieties. Different types of magnetic activity dependent on composition and temperature were found. The temperature of ferroelectric and antiferromagnetic phase coexistence was investigated in function of PT content, determining the temperature where each composition becomes multiferroic.