Two-dimensional (2D) van der Waals (vdW) materials are thin layers of crystals that are held together by the weak vdW forces. The recent discovery of long-range magnetic order in 2D vdW materials has triggered a renaissance in the study of 2D magnetism for both fundamental science and technological advances. In this talk, I will present our recent work on chromium

chalcogenides, a family of 2D self-intercalated vdW magnets which possess a broad spectrum of intriguing magnetic properties, including high temperature ferromagnetism, topological spin textures, and giant anomalous Hall conductivity. I will discuss the bottom-up synthesis of these 2D magnets, the correlation between their structural phases and emergent magnetism, as well as the new opportunities that they may offer and the challenges that need to be overcome for

spintronic applications.