Existence of the multiferroic property at room temperature in Ti doped CoFe2O4

The appearance of ferroelectricity has been observed in magnetically ordered Co(Fe1−xTix)2O4 at room temperature. Magnetization and dielectric constant is found to increase with Ti doping. It is observed from an X-ray Photoemission Spectroscopy study that Ti goes to the octahedral site with (+4) ionic state. An M–H hysteresis curve at room temperature shows the ferrimagnetic ordering and a P–E loop at room temperature clearly indicates the existence of ferroelectricity.

► CoFe2O4 is an inverse spinel with ferromagnetic ordering.
► Ti+4 ion is doped in the Fe site to induce ferroelectricity.
► d0 ness is the reason for showing the multiferroic property.