Magnetic properties of Co doped WSe2 by implantation

Abstract In this research, the potential of transition metal doped 2D WSe 2 as a 2D dilute magnetic semiconductor has been explored experimentally. Single crystal WSe 2 was doped with Co with various concentrations by a physical implantation method. Raman and X-ray diffraction spectra indicate the effective doping of Co in the substitutional sites. Secondary ion mass spectrometry results demonstrate the Gaussian distribution of Co in WSe 2 . Magnetic measurements show that both un-doped WSe 2 and WSe 2 doped with Co exhibit weak ferromagnetism at room temperature. The magnetization is increased with Co doping compared to un-doped WSe 2 and it tends to be enhanced with increasing doping concentration.