Van der Waals Epitaxial Growth of 2D Layered Room‐Temperature Ferromagnetic CrS₂

Abstract

Abstract 2D magnetic materials have been attracting enormous interest for both fundamental research and potential spintronic applications. Here, this work demonstrates the van der Waals epitaxial growth of air‐stable 2D magnetic CrS 2 on mica substrate by chemical vapor deposition (CVD). The layered nature, high crystallinity, stoichiometry, and high‐purity 1T phase of the individual CrS 2 crystallites are verified by a series of complementary characterization techniques including atomic force microscope, scanning transmission electron microscope and energy dispersive X‐ray spectroscopy. The single‐crystalline 1T‐phase CrS 2 crystallites exhibit a metallic nature with a moderate conductivity of 1.78 × 10 2 S m −1 and a room‐temperature ferromagnetism with a coercive field of 28.7 Oe. The CVD growth of the air‐stable CrS 2 crystallites with 1T phase and high crystallinity offer a new platform for the further physics research and spintronic device applications.