Enhancement of multiferroic response in La-doped PbTiO3–TbFeO3 perovskite

A novel solid solution of La-doped 0.80PbTiO3-0.20Tb(1−x)LaxFeO3, in the range 0.02 ≤ x ≤ 0.15, was studied for ferroelectric, electromechanical, and magnetic properties. Notably, at x = 0.08, the material exhibits enhanced characteristics, including a maximum remanent polarization of 37 μC/cm2. Structural analysis indicates that x = 0.08 corresponds to a phase boundary region separating the coexistence of tetragonal (P4mm) + cubic (Pm-3m) phases and a single tetragonal phase (P4mm), highlighting the critical role of phase boundary region in enhancing properties.