  Discovery of intrinsic two-dimensional (2D) magnetic materials is crucial for
understanding the fundamentals of 2D magnetism and realizing next-generation
magnetoelectronic and magneto-optical devices. Although significant efforts
have been devoted to identifying 2D magnetism by exfoliating bulk magnetic
layered materials, seldom studies are performed to synthesize ultra-thin
magnetic materials directly for non-layered magnetic materials. Here, we report
the successful synthesis of a new type of theoretically proposed 2D metallic
ferromagnet 1T FeS2, through the molten-salt-assisted chemical vapor deposition
(CVD) method. The long-range 2D ferromagnetic order is confirmed by the
observation of a large anomalous Hall effect (AHE) and a hysteretic
magnetoresistance. The experimentally detected out-of-plane ferromagnetic
ordering is theoretically suported with Stoner criterion. Our findings open up
new possibilities to search novel 2D ferromagnets in non-layered compounds and
render opportunities for realizing realistic ultra-thin spintronic devices.
