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Lattice Dynamics of Calcite

1973; American Physical Society; Volume: 8; Issue: 10 Linguagem: Inglês

10.1103/physrevb.8.4795

0556-2805

E. R. Cowley, A. K. Pant,

Solid-state spectroscopy and crystallography

The phonon dispersion relations for the lowest-ten external branches, and for wave vectors along the optic axis, ahve been measured in calcite, CaC${\mathrm{O}}_{3}$, at room temperature, by means of inelastic-neutron-scattering techniques. The results are shown to be consistent with a simple shell model containing ten adjustable parameters.