Abstract
Diffusion coefficients for S–Se interdiffusion in tiemannite (HgSe) single crystals have been determined in the temperature range 500°–700°C. The measured diffusivities may be fit by the equation
An activation energy for S–Se interdiffusion of 105 kJ/mole is derived from the diffusion data. The S–Se interdiffusion coefficients are larger than sulfur self-diffusion coefficients in sulfides that have the same crystal structure as tiemannite.
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