The dispersion of acoustic phonons in CoCl2 |
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| Authors: | P Carrara JP Redoules C Escribe KRA Ziebeck |
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| Institution: | Laboratoire de Physique des Solides, Associé au CNRS, 118 Route de Narbonne, 31077 Toulouse Cédex, France;Institut Laue-Langevin, 156X Centre de Tri, 38042 Grenoble Cédex, France |
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| Abstract: | The acoustic phonon dispersion curves for CoCl2 have been measured, in the three principal symmetry directions, by inelastic neutron scattering at room temperature. From the initial slopes the sound velocities have been derived and the elastic constants calculated. The two dimensional nature of the structure of CoCl2 is apparent in the difference between the sound velocities parallel and perpendicular to the closed packed layers. |
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