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Heat capacities of silver sulfide samples in the Ag 2 Se composition region have been measured by adiabatic calorimetry from 298.15 to 900K. In addition to a single-phase sample with stoichiometric composition, a two-phase sample with 1mol% silver excess, and one with similar selenium excess were studied. The structural transition from orthorhombic Ag 2 Se to cubic Ag 2 Se...
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