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Lattice Dynamics of Cadmium at 88 K
Author(s) -
Toussaint G.,
Champier G.
Publication year - 1972
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220540115
Subject(s) - pseudopotential , phonon , condensed matter physics , anisotropy , scattering , debye , physics , debye–waller factor , pair distribution function , distribution function , debye model , materials science , optics , thermodynamics , quantum mechanics
Phonon‐dispersion curves along the [0110], [1120], and [0001] symmetry directions of the h.c.p. metal cadmium have been measured by diffuse scattering of X‐rays at 88 K. A general interatomic force‐constant model has been used to fit the phonon frequencies and interactions up to at least sixth neighbours have to be taken into account. A frequency‐distribution function has been calculated and used to calculate the specific heat and anisotropic Debye‐Waller factor. Finally, by identifying the calculated frequency dispersion curves to the curves obtained from X‐ray scattering experiments, the parameters of a pseudopotential model are calculated.