IN SITU TEMPERATURE-DEPENDENT RAMAN SPECTROSCOPY AND LATTICE DYNAMICS OF SCHEELITE AND SCHEELITE-LIKE COMPOUNDS
https://doi.org/10.5800/GT-2022-13-2s-0609
Abstract
Here we present the results from an in situ Raman thermal spectroscopy study on specific features of the lattice dynamics of scheelite-type compounds (natural and synthetic scheelite, synthetic CaMoO4 and SrMoO4) in the temperature range of 83–873 K. Spectroscopic data processing has been carried out based on both classical "peak fitting" and statistical approaches. It has been suggested that an increase in temperature causes nonuniformity of MoO4 and WO4 tetrahedra transformation. It has been assumed that dynamics in thermal expansion of unit cells of Ca-containing compounds is slower than that in thermal expansion of WO4 (MoO4) polyhedral. This diffence is mainly due to the fact that thermal expansion is mainly defined by the expansion of CaO8 (SrO8) polyhedra.
Supporting agencies: The study was supported by the state assignment of the "Geoanalitik" Shared Research Facilities of IGG UB RAS (AAAA-A18-118053090045-8) (Raman spectrocopy and EPMA – 50 %) and the grant of the Russian Science Foundation 20-73-10048 (synthesis and certification of samples). The re-equipment and comprehensive development of the "Geoanalitik" Shared Research Facilities of the IGG UB RAS is financially supported by the grant of the Ministry of Science and Higher Education of the Russian Federation (Agreement 075-15-2021-680).
About the Authors
E. A. Pankrushina
Zavaritsky Institute of Geology and Geochemistry, Ural Branch of the Russian Academy of Sciences
Russian Federation
Russian Federation
Elizaveta A. Pankrushina
15 Academician Vonsovsky St, Ekaterinburg 620016
Z. A. Mikhaylovskaya
Zavaritsky Institute of Geology and Geochemistry, Ural Branch of the Russian Academy of Sciences
Russian Federation
15 Academician Vonsovsky St, Ekaterinburg 620016
Russian Federation
15 Academician Vonsovsky St, Ekaterinburg 620016
Yu. V. Shchapova
Zavaritsky Institute of Geology and Geochemistry, Ural Branch of the Russian Academy of Sciences
Russian Federation
15 Academician Vonsovsky St, Ekaterinburg 620016
Russian Federation
15 Academician Vonsovsky St, Ekaterinburg 620016
S. L. Votyakov
Zavaritsky Institute of Geology and Geochemistry, Ural Branch of the Russian Academy of Sciences
Russian Federation
15 Academician Vonsovsky St, Ekaterinburg 620016
Russian Federation
15 Academician Vonsovsky St, Ekaterinburg 620016
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Review
For citations:
Pankrushina E.A., Mikhaylovskaya Z.A., Shchapova Yu.V., Votyakov S.L. IN SITU TEMPERATURE-DEPENDENT RAMAN SPECTROSCOPY AND LATTICE DYNAMICS OF SCHEELITE AND SCHEELITE-LIKE COMPOUNDS. Geodynamics & Tectonophysics. 2022;13(2):0609. (In Russ.) https://doi.org/10.5800/GT-2022-13-2s-0609
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