Magnetic properties of the natural and isotope-modified diamond and silicon carbideA.N. Taldenkov, A.V. Inyushkin, E.A. Chistotina, V.G. Ralchenko, A.P. Bolshakov and E.N. MokhovEPJ Web Conf., 185 (2018) 04007DOI: https://doi.org/10.1051/epjconf/201818504007