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In this letter, Raman spectra for a series of (Ga, Mn)N samples with different Mn concentration grown by MOCVD have been investigated. A new vibrational mode at 577 cm −1 obtained is assigned to the local vibrational mode (LVM) of Mn substituting the Ga site. Another mode at 667 cm −1 arises from vibrational mode of nitrogen vacancies-related defects. It is found that Mn doping increases...
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