Spin-polarized calculations of electronic structures in ferromagnetic and antiferromagnetic Zn0.75TM0.25Se (TM=Cr, Fe, Co and Ni)

► The calculation of the exchange constants of ZnTMSe (TM=Cr, Fe, Co and Ni). ► Prediction of the spin-exchange splitting of ZnTMSe (TM=Cr, Fe, Co and Ni). ► The study of ZnTMSe diluted magnetic semiconductors in the FM and AFM phases.