Abstract
The magnetic characteristics of 1:1 WSe2 and MoSe2 mixed single crystal powder with and without thermal annealing process were studied. Scanning electron microscopy images and Raman spectroscopy support that the WSe2 and MoSe2 are chemically bound at the WSe2 and MoSe2 boundary after the thermal annealing process. Our sample also exhibits the hysteresis loop and splitting of magnetic moment at zero field cooling and field cooling precesses in the chemically bound system. In contrast, all these characteristics are not detected in the unannealed mixed WSe2 and MoSe2 crystal powder. Temperature independent singular paramagnetic peaks are only detected in the WSe2 and MoSe2 mixed single crystal powder with thermal annealing. These results support that the temperature independent singular paramagnetic susceptibility peaks should originate from the intrinsic lattice mismatch induced ferromagnetism.
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