  Interlayer coupling is of vital importance for manipulating physical
properties, e.g. electronic bandgap, in two-dimensional materials. However,
tuning magnetic proper-ties in these materials is yet to be addressed. Here, we
found a striped antiferromag-netic (sAFM) to ferromagnetic (FM) transition
undergoing from monolayer to bilayer and thicker CrS2. This transition is
attributed to charge sharing of interlayer S atoms and its resulting charge
transfer from Cr d eg to t2g orbitals. The transferred charge reduces a portion
of Cr4+ to Cr3+, which enhances the double-exchange mechanism favoring FM
rather than sAFM ordering. Doping of electrons shares the same effect with
stacking induced charge sharing. Therefore, charge doping could either
manip-ulate the magnetic ordering between sAFM and FM or tune CrS2 between p-
and n-doped magnetic semiconductors. We also proposed several prototype devices
ena-bling to use external electric field for manipulating magnetic orderings of
CrS2 layers. These results manifest the role of interlayer coupling in
modifying magnetic proper-ties of layered materials
