Lattice Dynamics of Dilute Impurities in Transition Metals: An Empirical Correlation
Abstract
Certain latticedynamical properties of dilute Fe impurities in cubic transitionmetal hosts are found from Mössbauereffect studies to be correlated in a simple and unexpected way with the host properties and the impurity mass. The correlation is consistent with the hypothesis that the effective force constant associated with impurities is proportional to the geometric mean of the force constants for the impurity in bulk and for the host lattice in bulk. This result has applicability to testing of the McMillan theory of superconductivity.
 Publication:

Physical Review Letters
 Pub Date:
 October 1970
 DOI:
 10.1103/PhysRevLett.25.1195
 Bibcode:
 1970PhRvL..25.1195C