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- W1968908045 abstract "Ga1−xCrxN thin films with and without the Si doping have been prepared by molecular beam epitaxy. The samples have been investigated by X-ray diffraction, X-ray photoemission spectroscopy, photoluminescence, optical absorption spectra and magnetic measurements. It has been confirmed that for the undoped samples Cr in GaN is predominantly trivalent when substituting for Ga and that the Cr 3d state appears within the band gap of GaN. In Si doped specimens the upward shifts of the chemical potential are observed, and the electrons supplied by the Si doping are trapped at Cr sites forming Cr2+. As a result, the Si doping effects show an increase of the Curie temperature, and a reduction of the saturation magnetization in the Ga1−xCrxN:Si samples. The significant effect on the ferromagnetism with Si doping in Ga1−xCrxN is explained by the percolation theory of bound magnetic polarons." @default.
- W1968908045 created "2016-06-24" @default.
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- W1968908045 date "2015-01-01" @default.
- W1968908045 modified "2023-10-16" @default.
- W1968908045 title "Effects of Si-doping on magnetic properties of Ga1−xCrxN" @default.
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- W1968908045 doi "https://doi.org/10.1016/j.jmmm.2014.09.021" @default.
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