Gallium thermal analysis

Thermally Activated Transformation of Gallium Nitrate The complete or partial thermal decomposition of metal nitrates is commonly used for the preparation of oxides. The thermal treatment of gallium nitrate, Ga(N03)3-3c H2O, leads to formation of the pure oxide in an inert gas atmosphere [239] and to the pure nitride when the reaction is carried out in a reducing gas atmosphere [231]. In order to explore the decomposition of Ga(N03)3 x H2O as a function of temperature in a nitrogen gas atmosphere, Berbenni et al. combined thermal analysis with Fourier transform infrared (FTIR) spectroscopy, suggesting a mechanism that proceeds in three main steps, as displayed in Eqs. (1) to (3) [239]. 

The results of a recent investigation [3] by thermal and x-ray phase analysis, as well as a determination of the microstructure, enabled the authors to construct for the first time the phase diagram of the gallium—selenium system (Fig. 1), and to confirm the existence of the selenides cited above. 

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