Abstract
The diffusion of nickel into lead telluride has been studied between 200° and 400° as a function of crystal composition and doping. Even at these temperatures, the diffusion of nickel is very dependent on the composition of the crystal. For the most part the nickel distribution profiles, as determined using radiotracer techniques, cannot be described by a simple solution of the diffusion equation. Except in crystals containing a large concentration of cation vacancies, the nickel distribution profiles are best fit by two overlapping curves, each of which is a solution of the diffusion equation with different values of the diffusion coefficient. Diffusion into crystals containing a large cation vacancy concentration can be described by a simple solution of the diffusion equation. The range of compositions which can be studied at these temperatures is restricted by the retrograde solubility of lead and tellurium in PbTe.
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
