“…Meanwhile, II-VI semiconductors can be doped with larger concentration of 3d elements up to 25%, much larger than III-V semiconductors [10]. For instance, wurtzite ZnS semiconductor doped with Cr, Mn, Fe, Co, Ni [11], Zn 0.75 Cr 0.25 S and Cd 0.75 Cr 0.25 S [12], Zn 0.75 TM 0.25 S (TM = Fe, Co and Ni) [13] and Zn 1Àx A x B diluted magnetic semiconductors [14] etc. have been discussed theoretically.…”