| Autor: |
Qing Rui Cai, Hua Fu Wang, Guang Yan Hong, Guo Xiang Lan |
| Rok vydání: |
1990 |
| Předmět: |
|
| Zdroj: |
Journal of Physics and Chemistry of Solids. 51:273-278 |
| ISSN: |
0022-3697 |
| DOI: |
10.1016/0022-3697(90)90056-l |
| Popis: |
The high-pressure Raman spectra of CeP 5 O 14 and PrP 5 O 14 crystals were studied, and the values of 1 v dv dp for some vibrational modes determined. The assignment of these modes is discussed. A probable structural phase transition induced by pressure was found near 75 kbar for PrP 5 O 14 . The high-pressure Raman spectra of the soft optic modes of all eight crystals of LnP 5 O 14 (Ln = La ~ Tb) were recorded in the pressure range of 0–20 kbar. The results show that the soft optic modes of LnP 5 O 14 have strong anharmonicities, which decrease with the pressure and the atomic number of Ln. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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