Electronic and magneto-optical properties of ZnO:Co Erkin Kulatov, Oleg Novodvorskii, Andrey Lotin, Vladimir Rylkov, Elena Gan’shina, Dmitrii Shevyakov, Victor Tugushev and Yurii Uspenskii EPJ Web Conf., 185 (2018) 06012 Published online: 04 July 2018 DOI: 10.1051/epjconf/201818506012