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In this paper, we report on the pure and Cr 3+ -doped NaAl(WO 4 ) 2 nanopowders prepared by the co-precipitation/calcination method. X-ray diffraction, Raman/infrared spectroscopy, reflectance and luminescence studies (UV–vis optical band gap) of the obtained NaAl(WO 4 ) 2 nanoparticles are reported. Additionally, room temperature Raman and IR spectra as well...
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