Age-induced phase transitions on mechanically alloyed amorphous GaSe |
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Authors: | CEM Campos JC de Lima SM Souza |
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Institution: | a Departamento de Física, Universidade Federal de Santa Catarina, Trindade, C.P. 476, 88040-900 Florianópolis, SC, Brazil b Departamento de Física, Universidade Federal de São Carlos, C.P. 676, 13565-905 São Carlos, SP, Brazil |
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Abstract: | After aging it for four years at room temperature, a mechanically alloyed amorphous GaSe powder was transformed to a multi-phase crystalline alloy, where major phase is the trigonal Se one. The structural, thermal and optical properties of this aged amorphous GaSe were investigated through systematic X-ray diffraction, differential scanning calorimetry and Raman scattering measurements. The X-ray diffraction results on the aged GaSe powder suggest the presence of oxides, and X-ray absorption spectroscopy was employed to further investigate it. |
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Keywords: | 81 20 Ev 61 10 -i 87 64 Je 61 82 Rx 61 10 Ht |
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