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Calculation of the heat capacity Cp from the temperature-induced and pressure-induced Raman frequency shifts for solid benzene, naphthalene and anthracene
Date
2019-02-01
Author
Ozdemir, Hilal
Yurtseven, Hasan Hamit
Metadata
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This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
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The heat capacity Cp is calculated from the temperature-induced and pressure-induced Raman frequency shifts by means of the mode Griineisen parameter for the I-II transition of solid benzene, naphthalene and anthracene. For this calculation, contributions to Cp are considered due to the six lattice modes of solid benzene, six librational modes of naphthalene and, six phonons and nine vibrons of anthracene with their mode Griineisen parameters at various temperature (P = 0) and pressures (T=300 K). Our calculated Cp explains the observed behavior of the I II transition in solid benzene and also of naphthalene and anthracene. Temperature dependence of the entropy difference is calculated from the heat capacity for those hydrocarbons, which can be compared with the observed data.
Subject Keywords
Electrical and Electronic Engineering
,
Atomic and Molecular Physics, and Optics
,
Electronic, Optical and Magnetic Materials
URI
https://hdl.handle.net/11511/56587
Journal
Optik
DOI
https://doi.org/10.1016/j.ijleo.2018.09.070
Collections
Department of Physics, Article