Issue |
J. Phys. Colloques
Volume 42, Number C6, Décembre 1981
International Conference on Phonon Physics
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Page(s) | C6-749 - C6-751 | |
DOI | https://doi.org/10.1051/jphyscol:19816220 |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-749-C6-751
DOI: 10.1051/jphyscol:19816220
University of Metz, Ile du Saulcy, 57045 Metz, France
J. Phys. Colloques 42 (1981) C6-749-C6-751
DOI: 10.1051/jphyscol:19816220
LATTICE DYNAMICS OF THE CUBIC-TETRAGONAL PHASE TRANSITION IN KNb03
M.D. Fontana, G.E. Kugel et C. CarabatosUniversity of Metz, Ile du Saulcy, 57045 Metz, France
Abstract
The dynamical properties in the cubic and the tetragonal phases of KNbO3 are described on the basis of the same shell model. Calculations clearly show the strong influence of the intraionic oxygen polarizability on the ferro electric mode behaviour in both phases.