Abstract
The mobility and the diffusivity of a solute tracer are calculated by using the matrix defect walk equation of Manning and Stark for the case in which the defect moving the tracer is a divancancy that may dissociate. Calculations show that the ratio of mobility to diffusivity is insensitive to the dissociation of the divacancy. Thus, the effective heat of transport for thermomigration is the sum of contributions from tracer motion by single vacancies and by bound divacancies. A closed form for the heat of transport of a tracer by bound divacancies is determined. Tabulations are given for the instance of a mixed diffusion mechanism by single vacancies and divacancies.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
