We have investigated the structural, electronic, and ferromagnetic properties of chromium (Cr)-doped rocksalt BaTe (Ba 1−x Cr x Te) compounds with compositions x = 0.25, 0.5, and 0.75, based on density functional theory with generalized gradient approximation of Wu-Cohen (GGA-WC) and Tran-Blaha-modified Becke-Johnson (TB-mBJ) potential using the WIEN2k package. We found that the electronic structure showed half-metallic ferromagnetic character with spin polarization of 100 % around the Fermi level. In addition, the minority-spin bands depicted a half-metallic ferromagnetic (HMF) gap and half-metallic (HM) gap. The improved HMF and HM gaps found with the TB-mBJ potential are higher than with the GGA-WC approximation. These large HM gaps make Ba 1−x Cr x Te compounds promising candidates for use in spintronics applications.

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