Interfacial zone equilibrium approximation

To evaluate C](5 ) and C1(L ), we introduce what has been designated [28, 29] the interfacial zone equilibrium approximation the concentration profiles of all charged defect species within the two interfacial regions (0interior zone (5 local space-charge neutrality can be approximated by... 

To evaluate the rate coefficient in terms of the interfacial defect concentrations, it is thus necessary to evaluate Ci (8 ) and Ci (L ), utilizing one aspect of the interfacial zone equilibrium approximation. At thermal equilibrium... 

This result can be noted to depend upon the mobilities of both species and the boundary concentrations of these species at the interfaces of the oxide film. In contrast, the potential differences across zones 1 and 3 do not involve the mobilities, which is in accordance with the interfacial zone equilibrium approximation. 

In accordance to Gugenheim approximation the surface layer represents a zone with a certain thickness, within which the interfacial forces are not in equilibrium. Such regions appear when at least two phases interact in the following combinations liquid-gas solid-gas solid-liquid and liquid-liquid. Based on statistical physics, for the interfacial layers was defined a state function (3.224) and a probability of distribution ( 3.225 ), into a wider canonized ensamble ... 

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