-1.0 -0.5 0 Normalized Intensity (arb. units) -1 0 782 780 778 776 800 795 790 785 780 775 Photon Energy (eV) 100 50 0 100 50 0 -1.0 0 800 795 790 785 780 775 Photon Energy (eV) 100 50 0 782 780 778 776 -1 0 782 780 778 776 T =20 K, H =7.0 T Zn$_{1-}$$_{x}$Co$_{x}$O x =0.07,  P$_{O2}$ =10 -4  Pa x =0.10,  P$_{O2}$ =10 -2  Pa x =0.10,  P$_{O2}$ =10 -3  Pa x =0.10,  P$_{O2}$ =10 -4  Pa (a) P$_{O2}$ =10 -3  Pa  Ferro. ZnCoO  CI calculation (b) Zn$_{1-}$$_{x}$Co$_{x}$O x =0.10 Co 2 p XAS Co 2 p$_{3/2}$ Co 2 p$_{3/2}$ FIG. 2: (Color online) Co 2 p core-level absorption spectra of Zn$_{1}$$_{−}$$_{x}$Co$_{x}$O thin films measured at H = 7 . 0 T and T = 20 K. (a) Comparison of the XAS (upper) and XMCD (lower) spectra between the samples measured at H = 7 . 0 T and T = 20 K. (b) Comparison of the line shapes of the present spectra with that of the ferromagnetic sample and the calculated spectrum reported in the previous study [17]. All the XAS and XMCD spectra have been normalized to the positive and negative peak heights, respectively. The insets show expanded plots at the Co 2 p$_{3}$$_{/}$$_{2}$ edge. 17