| Issue |
J. Phys. Colloques
Volume 42, Number C6, Décembre 1981
International Conference on Phonon Physics
|
|
|---|---|---|
| Page(s) | C6-734 - C6-736 | |
| DOI | https://doi.org/10.1051/jphyscol:19816215 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-734-C6-736
DOI: 10.1051/jphyscol:19816215
1 C.N.E.T., 196 rue de Paris, 92220 Bagneux, France
2 I.L.L., Grenoble, France
J. Phys. Colloques 42 (1981) C6-734-C6-736
DOI: 10.1051/jphyscol:19816215
SOFT PHONON VALLEY NEAR THE TRANSITION TO AN INCOMMENSURATE PHASE IN BARIUM SODIUM NIOBATE
J. Schneck1, J.C. Toledano1, J. Aubree1, B. Joukoff1 et C. Joffrin21 C.N.E.T., 196 rue de Paris, 92220 Bagneux, France
2 I.L.L., Grenoble, France
Abstract
The dynamic characteristics of the tetragonal to incommensurate transition in Barium Sodium Niobate has been investigated. The precursor effects consist, in the tetragonal phase, of a soft phonon and a central peak.