LATTICE-DYNAMICS OF SAPPHIRE (AL2O3)

SCHOBER, H and STRAUCH, D and DORNER, B (1993) LATTICE-DYNAMICS OF SAPPHIRE (AL2O3). ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER, 92 (3). pp. 273-283. ISSN 0722-3277,

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Abstract

Using inelastic neutron scattering we have determined all the dispersion branches of the LAMBDA1, LAMBDA2 and LAMBDA3 representations along the three-fold axis as well as the 2 times 15 branches of SIGMA1, and SIGMA2 symmetry along the GAMMA-A-direction plus some branches along the GAMMA-D-direction. The experimental data are analyzed using various rigid ion, polarizable ion and shell models. The shell models give a very satisfactory account of the dispersion curves as well as the scattering intensities. Special attention is given to the investigation of dielectric constants and equilibrium conditions.

Item Type: Article
Uncontrolled Keywords: PHONON DISPERSION; CORUNDUM;
Depositing User: Dr. Gernot Deinzer
Last Modified: 19 Oct 2022 08:42
URI: https://pred.uni-regensburg.de/id/eprint/53706

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