Magnetic materials have played a significant role in technology. To advance technology,
there is the need to continue developing a new suite of magnetic materials, particularly from available
and medium-priced materials. An ab initio density functional calculation method has been
performed to investigate the electronic and magnetic properties of some chromium-based compounds
in the stoichiometry Cr2M (M = As, In, Ga, Mn, Sn). The results show that Cr2In and Cr2Mn are
non-magnetic; Cr2As are antiferromagnetic, while Cr2Ga and Cr2Sn are strong ferromagnets. The
calculated formation energy is significant, predicting that all the compounds are thermodynamically
feasible. The chromium atom would occupy the same lattice sites in Cr2Ga, Cr2Mn, and Cr2Sn. The
polarization ratio in Cr2Sn is 87%, suggesting it could be half-metal and suitable for spintronic
applications.
Keywords: Spintronics, ferromagnetism, antiferromagnetism, polarization ratio, exchange splitting.
