3d-elements 1 American Chemical Society Antiferromagnetism 1 Doped systems 1 Electronic and magnetic properties 1 Exchange coupling 1 Ferro-magnetic interactions 1 Ferromagnetic interaction 1 Ferromagnetic materials 1 Ferromagnetism 1 Magnetic couplings 1 Manganese 1 Monolayers 1 Ordered alloys 1 Relative strength 1 Sulfur compounds 1 Systematic study 1 Two-dimensional 1