Influence of mole ratio of Si: C on the magnetic property of undoped and vanadium carbide doped 3C-SiC

► Ferromagnetism (FM) of undoped 3C-SiC not changes with increasing Si: C. ► FM of V-doped 3C-SiC weakens with increasing Si: C. ► FM of 3C-SiC is related with vacancy concentration. ► Divacancies rather than carrier concentration plays dominating role in the FM.