Journal Article Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. ferroelectrics phase‐field modeling strain‐tuning Insulator‐to‐metal transition MAPbI3 Mn2FeWO6 OWX23150D5 Published Erratum Selenium Compounds Silicon THz emission TiO2 VO2 X‐ray diffraction microscopy Z4152N8IUI Zinc Compounds barium titanate carrier-lattice coupling charge separation conducting domain walls crystal symmetry domains and networks electro‐optic effect energy conversion exchange coupling first-principles calculations hybrid organic-inorganic perovskites