| Numéro |
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
|
|
|---|---|---|
| Page(s) | C6-412 - C6-414 | |
| DOI | https://doi.org/10.1051/jphyscol:19816120 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-412-C6-414
DOI: 10.1051/jphyscol:19816120
1 SNCI-NCRS, 38000 Grenoble, France
2 Max-Planck-Institut HML, 38000 Grenoble, France
3 Max-Planck-Institut, 7000 Stuttgart, F.R.G.
4 Université Paris VI , Paris, France
J. Phys. Colloques 42 (1981) C6-412-C6-414
DOI: 10.1051/jphyscol:19816120
INFLUENCE OF STRONG MAGNETIC FIELDS ON FERROELECTRIC PHASE TRANSITIONS
L.C. Brunel1, G. Landwehr2, A. Bussmann-Holder3, H. Bilz3, M. Balkanski4, M. Massot4 et M.K. Ziolkiewicz41 SNCI-NCRS, 38000 Grenoble, France
2 Max-Planck-Institut HML, 38000 Grenoble, France
3 Max-Planck-Institut, 7000 Stuttgart, F.R.G.
4 Université Paris VI , Paris, France
Abstract
The ferroelectric soft mode in SbSI has been investigated by Raman scattering in strong magnetic fields up to 14 Tesla. The mode frequency shifts towards lower frequencies for a magnetic field perpendicular to the ferroelectric c-axis while the mode frequency is unaffected for a field oriented parallel to the c-axis The effect is explained in terms of a recent theoretical model which is based on the anomalously strong electron-phonon coupling of the 3p electrons located at the sulphur ions.