Gradient Strain‐Induced Room‐Temperature Ferroelectricity in Magnetic Double‐Perovskite Superlattices (Small Methods 6/2023)

Inside Back Cover In article number 2201246, Zhao and co-workers induced room-temperature ferroelectricity in double-perovskite superlattice films by strain engineering. Meteors composed of distorted oxygen octahedrons excite ferroelectricity by local gradient strains, and Tai Chi represents the multiferroic coexistence in La2NiMnO6/La2CoMnO6 films. This work provides a new research idea for designing multiferroic materials.