| Numéro |
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
|
|
|---|---|---|
| Page(s) | C6-427 - C6-429 | |
| DOI | https://doi.org/10.1051/jphyscol:19816125 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-427-C6-429
DOI: 10.1051/jphyscol:19816125
1 Physics department, Korea Advanced Institute of Science & Technology, P.O. Box 150 Chongyangni, Seoul, Korea.
2 Physics department, Korea Advanced Institute of Science &Technology, P.O. Box 150 Chongyangni, Seoul, Korea.
J. Phys. Colloques 42 (1981) C6-427-C6-429
DOI: 10.1051/jphyscol:19816125
SOFT-MODE SPECTRA AND PHASE TRANSITION IN KDP CRYSTAL WITH ADP IMPURITIES
Jong-Jean Kim1, Jong-Wook Won2 et Byoung-Koo Choi11 Physics department, Korea Advanced Institute of Science & Technology, P.O. Box 150 Chongyangni, Seoul, Korea.
2 Physics department, Korea Advanced Institute of Science &Technology, P.O. Box 150 Chongyangni, Seoul, Korea.
Abstract
On the basis of the q-dependent coupling interactions between the proton pseudo-spin mode and the lattice phonon mode we could explain qualitatively the observation that the ferroelectric transition temperature of the KDP crystal was lowered as the ADP impurity concentration in the crystal was increased.