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Temperature and pressure dependence of the Raman frequency shifts in anthracene
Date
2016-08-01
Author
Ozdemir, H.
Yurtseven, Hasan Hamit
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In this study, the Raman frequency shifts of phonons and vibrons of crystalline anthracene as functions of temperature (at zero pressure) and pressure (at ambient temperature) have-been calculated using the experimental volume data from the literature. This calculation is performed for six phonons and nine vibrons through the mode Gruneisen parameters which have been determined from the Raman frequency and volume data at various pressures. Our predicted Raman frequencies of the phonon modes decrease with increasing temperature (zero pressure) linearly, whereas they increase with increasing pressure (ambient temperature) nonlinearly, as observed experimentally for anthracene. For vibrons, we find that the Raman frequencies are almost independent of temperature and pressure in this crystalline system.
Subject Keywords
Raman frequency shifts
,
Mode Gruneisen parameter
,
Anthracene
URI
https://hdl.handle.net/11511/53314
Journal
INDIAN JOURNAL OF PURE & APPLIED PHYSICS
Collections
Department of Physics, Article
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H. Ozdemir and H. H. Yurtseven, “Temperature and pressure dependence of the Raman frequency shifts in anthracene,”
INDIAN JOURNAL OF PURE & APPLIED PHYSICS
, pp. 489–494, 2016, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53314.