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The effects of different annealing conditions over the tin selenide obtained from a chemical route are presented in this work. The tin selenide was annealed at 300 and 600°C under hydrogen, nitrogen and argon atmospheres. The materials were characterized by X-ray diffraction and 119 Sn Mössbauer spectroscopy. In the ‘as synthetized’ material a considerably amount of tin oxide (57%) was detected...
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