Evolution of magnetism and transport properties through chemical doping and intercalation for vdW transition metal chalcogen-halides

Van der Waals(vdW) magnets currently receive increasing research interest for both fundamental 2D materials research and their potential in future spintronic and information applications. The superior crystalline quality with minimum defects for these vdW magnet bulk crystals is extremely important for many aspects of 2D magnet studies. CrSBr is an air-stable vdW layered orthorhombic antiferromagnet which shows high Néel temperature of 132 K with A type magnetic ordering structure, where each atomic layer CrSBr shows in-plane ferromagnetic ordering along the b axis, and the adjacent layers stack antiferromagnetically along the c axis. Interesting properties such as structural phase transformations, magneto-optical and magneto-transport, the coupling of excitons and magnons, and surface magnetism have been reported. Here we carry out systematic doping and intercalation studies to probe the magnetic and transport properties of high quality bulk CrSBr crystals we have synthesized. The detailed results and their implications will be presented and discussed. In addition, we will discuss and report our efforts on bulk crystal growth on large series of orthorhombic magnetic oxyhalide phases, their crystal quality and related physical properties will be properly discussed.