  Recent developments in two-dimensional (2D) magnetism have motivated the
search for novel van-der Waals (vdWs) magnetic materials to explore new
magnetic phenomenon in the 2D limit. Metal thiophosphates, MPX3, is a class of
magnetic vdWs materials with antiferromagnetic (AFM) ordering persisting down
to the atomically thin limit. The magnetism in this material family has been
found to be highly dependent on the choice of transition metal M. In this work,
we have synthesized the intermediate compounds Ni1-xMnxPS3 (0 < x < 1) and
investigated their magnetic properties. Our study reveals that the variation of
Ni and Mn content in Ni1-xMnxPS3 can efficiently tune the spin-flop transition,
likely due to the modulation of the magnetic anisotropy. Such effective tunning
offers a promising candidate to engineer 2D magnetism for future device
applications.
