Answers are grounded in this paper and cite their sources.
The librational modes of the $〈100〉$-split interstitial in fcc metals can undergo resonant hybridization with the phonons of the perfect crystal. As in the analogous case of KCl: CN^-, this hybridization leads to effects which can be observed by inelastic neutron scattering at concentrations orders of magnitude smaller than those required for the observation of effects introduced by simple substitutional impurities.
No takes yet. Share an insight, caveat, or question.
Wood et al. (1975) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: