Vibrational spectroscopy at high pressures: 44—thallous carbonate
✍ Scribed by D. M. Adams; P. D. Hatton; I. D. Taylor
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- English
- Weight
- 431 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0377-0486
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✦ Synopsis
Raman spectra of thallous carbonate have been studied to c. 52 kbar and mid-IR spectra to 36 kbar. Details of the assignment have also been established using single-crystal IR reflectance and Raman spectroscopy. Phase transitions were found near 13 and 38 kbar on the basis of the Raman evidence, thus supporting the earlier conclusions of Meisalo and Kalliomaki based on x-ray powder and optical results. Analysis of possible space group relations between phases I11 (ambient) and IV showed that IV must be orthorhombic and adopt one of the Dih groups, where n = 17,19,21,25 or 28. Structural relationships between the phases are discussed.
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