A novel diluted magnetic semiconductor (Ca,Na)(Zn,Mn)2Sb2 with decoupled charge and spin dopings |
(a) The XRD patterns for (Ca1–xNax)(Zn2–xMnx)Sb2 (x = 0.08, 0.10, 0.12, 0.16, 0.20). Traces of impurities ZnSb (*) and Sb (▲) are marked. (b) The Rietveld refinement of (Ca0.88Na0.12)(Zn1.88Mn0.12)Sb2. Inset is the crystal structure of CaZn2Sb2. (c) The lattice parameter c of (Ca1–xNax)(Zn2–xMnx)Sb2. |