Abstract
This paper reports mesoscopic Monte Carlo simulations (in which a ‘mesoscopic particle’ corresponds to a group of atoms or molecules) of interfacial films in ZnO–Bi 2O 3 binary ceramics. We observe the formation of Bi 2O 3-rich interfacial phases at the surface of ZnO grains (surface amorphous films) or at the grain-boundary between ZnO grains (intergranular films). In qualitative agreement with the experimental results reported on premelting of ceramics, the thickness of these films increases as the temperature increases up to the eutectic temperature. Moreover, the Bi 2O 3 concentration in the surficial or intergranular films is found to be larger than in the bulk. These surficial films exhibit both some layering and lateral ordering.
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