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Calculation of the thermodynamic quantities from the Raman frequency shifts and the Pippard relations for the alpha, -alpha and alpha ' phases of oxygen
Date
2018-01-01
Author
Tari, O.
Yurtseven, Hasan Hamit
Metadata
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Thermodynamic quantities such as the isothermal compressibility, thermal expansion and the difference in the specific heat are calculated as a function of pressure (T=10 K) for the alpha,-alpha and alpha ' phases of oxygen using the observed Raman frequencies of the two librons and one vibron from the literature through the mode Gruneisen parameter for this molecular solid. Calculated thermodynamic quantities decrease with increasing pressure with some discrepancies due to the different pressure - induced Raman frequency shifts of these modes studied for the alpha, -alpha and alpha ' phases of O-2. A linear variation of the difference in the specific heat with the thermal expansion and also a linear variation of the thermal expansion with the isothermal compressibility (Pippard relations) are obtained for the alpha, -alpha and alpha ' phases of oxygen as studied here.
Subject Keywords
Thermodynarnit quantities
,
Librational and vibrational modes alpha-O-2
,
Raman frequency shifts
URI
https://hdl.handle.net/11511/37152
Journal
OPTIK
DOI
https://doi.org/10.1016/j.ijleo.2017.12.086
Collections
Department of Physics, Article
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O. Tari and H. H. Yurtseven, “Calculation of the thermodynamic quantities from the Raman frequency shifts and the Pippard relations for the alpha, -alpha and alpha ′ phases of oxygen,”
OPTIK
, pp. 699–704, 2018, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37152.