  Over the past two decades, significant progress in two-dimensional (2D)
materials has invigorated research in condensed matter and material physics in
low dimensions. While traditionally studied in three-dimensional systems,
magnetism has now been extended to the 2D realm. Recent breakthroughs in 2D
magnetism have captured substantial interest from the scientific community,
owing to the stable magnetic order achievable in atomically thin layers of the
van der Waals (vdW)-type layered magnetic materials. These advances offer an
exciting platform for investigating related phenomena in low dimensions and
hold promise for spintronic applications. Consequently, vdW magnetic materials
with tunable magnetism have attracted significant attention. Specifically,
antiferromagnetic metal thiophosphates MPX3 (M = transition metal, P =
phosphorus, X = chalcogen) have been investigated extensively. These materials
exhibit long-range magnetic orders spanning from bulk to the 2D limit. The
magnetism in MPX3 arises from localized moments associated with transition
metal ions, making it tunable via substitutions and intercalations. In this
review, we focus on such tuning by providing a comprehensive summary of various
metal- and chalcogen-substitution and intercalation studies, along with the
mechanism of magnetism modulation, and a perspective on the development of this
emergent material family.
