Investigation of Tunneling States Using the Spin-Phonon Interaction. II. Analysis

A detailed comparison is made between the experimental results outlined in the preceding paper and the presently available theory. It is found that the Devonshire model adequately accounts for the results on KCl:C${\mathrm{N}}^{-}$. A tunneling model is appropriate to the system KCl:${\mathrm{Li}}^{+}$. Using this model, our results indicate that a significant amount of tunneling occurs along the body diagonal. This in turn indicates that the potential barrier to motion along the body diagonal is considerably less than that obtained from the calculations of Quigley and Das and of Wilson et al.