Synthesis and characterization of electroceramics with magnetoelectric properties

Electroceramics with ferropiezoelectric and ferri-ferromagnetic properties have been studied. These ceramics consist of two phases, a ferroelectric one (commercial BaTiO3) and a ferromagnetic one (MFe2O4, with M = Ni, Zn, Co, obtained through co-precipitation methods), which are later mixed using mechanical milling. A characterization of the previous phases is made by means of electronic microscopy and X-ray diffraction. The results of the magnetic, electric, ferroelectric and piezoelectrical response of the different compound compositions are obtained. The coexistence of phases is made clear, with a greater magnetic response in the samples of ferrite with Co and a greater piezoelectric in the samples of ferrite with Ni. These results are analysed, and the potential of the use of different mixtures is discussed.