Raman scattering study of crystal dynamics and order-disorder transitions in alkali hydrosulfides
Raman spectra have been measured for NaSH, CsSH and RbSH over a range of temperatures from 85 to 400°K. The results show that the order-disorder phase transitions in these solids are associated with significant changes in the details of their crystal dynamics. In addition the Raman spectra provide c...
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Published in | Solid state communications Vol. 13; no. 2; pp. 159 - 162 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Elsevier Ltd
01.01.1973
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Online Access | Get full text |
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Summary: | Raman spectra have been measured for NaSH, CsSH and RbSH over a range of temperatures from 85 to 400°K. The results show that the order-disorder phase transitions in these solids are associated with significant changes in the details of their crystal dynamics. In addition the Raman spectra provide clear evidence for the existence of previously unobserved low-temperature phases in each compound, which apparently involve total ordering of the SH
− ions.
Les spectres Raman ont été mesurés pour NaSH, CsSH et RbSH dans la gamme de temperatures 85 à 400°K. Les résultats montrent que les transitions de phase ordre vers désordre dans ces solides sont associeés à des changements significatifs dans les détails de leur dynamique cristalline. En outre, les spectres Raman suggèrent clairement dans chaque solide l'existence de phases à basse température non encore observées, phases qui apparemmet mettent en jeu l'alignement total des ions SH
−. |
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ISSN: | 0038-1098 1879-2766 |
DOI: | 10.1016/0038-1098(73)90216-0 |