Multiferroic property of Ca1-xLaxTi1-xFexO3 perovskite structure

We studied the multiferroic property of Ca1-xLaxTi1-xFexO3 (0.0 ≤ x ≤ 0.5) perovskite. We showed that multiferroic property can be triggered by strain mediation due to different ion doping. The prepared samples were characterized by X-ray to check for its phase purity. Increasing the La3+ ion concentration is found to induce a crystal distortion. A pseudo-tetragonal phase is found at the highest La3+ ion concentration. The changes in crystal symmetry induce different effects on the electrical polarization that can be seen in the electrical hysteresis of the perovskite. The correlation between magnetic and electric ordering reduces as the concentration of La3+ ion increases in which the lattice symmetry are more close to space invariant. The changes in the vibrational bands due to changes in the crystal structure were investigated by FTIR.