| Numéro |
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
|
|
|---|---|---|
| Page(s) | C6-731 - C6-733 | |
| DOI | https://doi.org/10.1051/jphyscol:19816214 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-731-C6-733
DOI: 10.1051/jphyscol:19816214
1 Kyushu University, Hakozaki, Fukuoka, Japan 812
2 Ibaraki Electrical Communication Lab., NTT, Japan 319-11
3 Atsugi Plant, Sony Corp., Atsugi, Japan 243
J. Phys. Colloques 42 (1981) C6-731-C6-733
DOI: 10.1051/jphyscol:19816214
BRI LLOUIN SCATTERING STUDY OF THE INCOMMENSURATE (ANTIFERROELECTRIC) PHASE TRANSITION IN SODIUM NITRITE
T. Yagi1, Y. Hidaka2 et K. Miura31 Kyushu University, Hakozaki, Fukuoka, Japan 812
2 Ibaraki Electrical Communication Lab., NTT, Japan 319-11
3 Atsugi Plant, Sony Corp., Atsugi, Japan 243
Abstract
The Brillouin scattering spectra of NaNO2 have been observed as a function of temperature near the two phase transition points ; normal (paraelectric)-incomensurate (antiferroelectric) and incommensurate-comensurate (ferroelectric) phase transition points. A simple temperature dependence of the Brillouin frequency shifts has been found in the incomensurate phase indicating existence of a dispersion of the sound velocity in hypersonic frequency.