Intrinsic Out‐Of‐Plane and In‐Plane Ferroelectricity in 2D AgCrS2 with High Curie Temperature

2D ferroelectric materials have attracted extensive research interest due to potential applications in nonvolatile memory, nanoelectronics and optoelectronics. However, the available 2D ferroelectric materials are scarce and most of them are limited by the uncontrollable preparation. Herein, a novel 2D ferroelectric material AgCrS