Morphotropic Phase Boundary in the Pb‐Free (1 − <i>x</i>)BiTi<sub>3/8</sub>Fe<sub>2/8</sub>Mg<sub>3/8</sub>O<sub>3</sub>–<i>x</i>CaTiO<sub>3</sub> System: Tetragonal Polarization and Enhanced Electromechanical Properties
Advanced materials