Magnetic properties of the natural and isotope-modified diamond and silicon carbide A.N. Taldenkov, A.V. Inyushkin, E.A. Chistotina, V.G. Ralchenko, A.P. Bolshakov and E.N. Mokhov EPJ Web Conf., 185 (2018) 04007 Published online: 04 July 2018 DOI: 10.1051/epjconf/201818504007