| Numéro |
J. Phys. Colloques
Volume 33, Numéro C2, Avril 1972
2e CONGRÈS EUROPÉEN DE FERROÉLECTRICITÉ
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|---|---|---|
| Page(s) | C2-106 - C2-107 | |
| DOI | https://doi.org/10.1051/jphyscol:1972234 | |
2e CONGRÈS EUROPÉEN DE FERROÉLECTRICITÉ
J. Phys. Colloques 33 (1972) C2-106-C2-107
DOI: 10.1051/jphyscol:1972234
Laboratoires Diélectriques et Ferroélectriques Faculté des Sciences, 6 Bd Gabriel, 21, Dijon, France.
J. Phys. Colloques 33 (1972) C2-106-C2-107
DOI: 10.1051/jphyscol:1972234
FAR INFRARED SPECTRA OF RbH2P04 CRYSTALS
M. REMOISSENET and R. GARDLaboratoires Diélectriques et Ferroélectriques Faculté des Sciences, 6 Bd Gabriel, 21, Dijon, France.
Abstract
The far infrared reflectivity spectrum of RbHzP04 crystals is measured from 10 to
400 cm-1 in the temperature range from 300 °K to 140 °K. The complex dielectric constant is
derived by a Kramers-Kronig dispersion relation. A preliminary analysis of the results shows that
they are far from a Debye type relaxation, but the damped harmonic oscillator model fits them. A
low frequency mode is found which is temperature dependent.