We have investigated the high-pressure behavior of lithium sul5de Li 2 S by Raman spectroscopy and synchrotron angledispersive powder X-ray di4raction in a diamond anvil cell (T β«Ψβ¬ 298 K). There occurs a fully reversible phase transition from the anti6uorite (Fm3m, Z β«Ψβ¬ 4) to an orthorhombic struc
Antifluorite to Ni2In-Type Phase Transition in K2S at High Pressures.
β Scribed by Angel Vegas; Andrzej Grzechnik; Michael Hanfland; Claus Muehle; Martin Jansen
- Publisher
- John Wiley and Sons
- Year
- 2003
- Weight
- 56 KB
- Volume
- 34
- Category
- Article
- ISSN
- 0931-7597
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π SIMILAR VOLUMES
A Raman study to 100 kbar has confirmed existence of a second-order phase change in NaNO, at 8.5 kbar at ambient temperature, and revealed a new transition at 48.0 kbar. This transition appears to be first-order in type and involve cell doubling.
## Infrared spect~ ofNaNOz and IWO2 in the rqjon OF the anion internal modes have been obtined using I; diamond anvil ceU at pressures up to 65 kbar. At 39Β°C NaNOZ undergoes a phase transition at LZ. 10.0 kbar, not at 14 kbar as reported from a~. earlier IR study. A similar trawition was found at