Two-dimensional (2D) intrinsic ferromagnetic materials with high ferromagnetic transition temperature ( T c ) are critical to the advancement of spintronic device technology. In this study, we present two stable room-temperature ferromagnetic carbides, namely, M C ( M = Cr, Mn) monolayers, with T c values of 384 and 391 K, respectively, along with strong perpendicular magnetic anisotropy (PMA). Furthermore, Cr x Mn 8− x C 8 ( x = 1 – 7 ) alloy monolayers are constructed. We demonstrate that the appropriate incorporation of Cr–M...
