Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Communities & Collections
Communities & Collections
Help
Help
Frequently Asked Questions
Frequently Asked Questions
Guides
Guides
Thesis submission
Thesis submission
MS without thesis term project submission
MS without thesis term project submission
Publication submission with DOI
Publication submission with DOI
Publication submission
Publication submission
Supporting Information
Supporting Information
General Information
General Information
Copyright, Embargo and License
Copyright, Embargo and License
Contact us
Contact us
Pressure dependence of the Raman frequencies for the modes I, II and III at constant temperatures in phase II of benzene
Date
2015-01-25
Author
Ozdemir, H.
Yurtseven, Hasan Hamit
Metadata
Show full item record
This work is licensed under a
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License
.
Item Usage Stats
54
views
0
downloads
Cite This
We study here the pressure dependence of the Raman frequencies for different modes in phase II of benzene at constant temperatures. By using the experimental data for the volume, we calculate the Raman frequency as a function of pressure at constant temperatures through the isothermal mode Gruneisen parameter for the modes studied. Our calculations show that the Raman frequencies predicted, agree well with the observed frequencies for the modes in phase II of benzene. The isothermal mode Gruneisen parameter decreases with the pressure for the Raman modes studied at constant temperatures for benzene II.
Subject Keywords
Inorganic Chemistry
,
Organic Chemistry
,
Analytical Chemistry
,
Spectroscopy
URI
https://hdl.handle.net/11511/47264
Journal
JOURNAL OF MOLECULAR STRUCTURE
DOI
https://doi.org/10.1016/j.molstruc.2014.09.057
Collections
Department of Physics, Article
Suggestions
OpenMETU
Core
Vibrational frequencies studied as a function of pressure in phase II of solid benzene
Yurtseven, Hasan Hamit; Kilit, E. (Elsevier BV, 2011-05-03)
The pressure dependence of the vibrational frequencies of six Raman modes is analyzed in phase II of solid benzene. The frequency shifts 1/nu(partial derivative nu/partial derivative P)(T) of those Raman modes are deduced from this analysis and they are related to the isothermal compressibility kappa(T)= -(1/V)(partial derivative V/partial derivative P)(T) through a constant isothermal mode Gruneisen parameter gamma(T) in phase II of solid benzene. The kappa(T) values predicted here are compared with the ka...
Raman bandwidths calculated for the librational ( a -phase) and internal (8, d loc and d phases) modes in solid N 2 using pseudospin-phonon coupling (PS) and energy-fluctuation (EF) models
Yurtseven, Hasan Hamit (Elsevier BV, 2020-10-01)
This study gives the calculation of the Raman bandwidths using the models of the pseudospin-phonon coupling (PS) and energy fluctuation (EF) where the Raman frequency calculated from the molecular field theory, is considered as the order parameter close to the phase transitions in nitrogen. In particular, we study the temperature dependence of the Raman bandwidths and frequency shifts of the Eg librational mode (zero pressure) and the internal modes of and (at various pressures) for the solid nitrogen by ...
Calculation of the Raman frequencies using volume data close to the tricritical and second order phase transitions in NH4Cl
Yurtseven, Hasan Hamit (Elsevier BV, 2009-04-30)
We calculate here the Raman frequencies of the v(5) TO(174 cm(-1)) and v(2) (1708 cm(-1)) modes as a function of temperature in the region of the tricritical (P = 1.6 kbar) and the second order (P = 2.8 kbar) phase transitions in NH4Cl. This calculation of the Raman frequencies is performed through the mode Gruneisen parameter by using the experimental length-change data obtained at zero pressure where the NH4Cl crystal exhibits a weakly first order phase transition (T-lambda = 242 K). The predicted Raman f...
Critical behaviour of the specific heat calculated using the Raman frequencies of the lattice and internal modes near the lambda-phase transition in NH4Br
Sen, S.; Yurtseven, Hasan Hamit (Elsevier BV, 2007-05-27)
We calculate here the specific heat of NH4Br using our Raman frequency shifts for the lattice mode Of nu(7) TA (56 cm(-1)) and the internal mode Of nu(2) (1684 cm(-1)) near its lambda-phase transition (T-lambda = 234 K, P = 0). By analyzing our Raman frequency shifts, values of alpha = 0. 19 (T < T-lambda, and T > T-lambda) for the lattice mode, and alpha = 0.45 (T < T-lambda) and alpha = 0.57 (T > T-lambda) for the internal mode, are used as the values of the critical exponent for the specific heat to pred...
Analysis of the Raman frequencies close to the lambda-phase transition in NH4Cl
Yurtseven, Hasan Hamit (Elsevier BV, 2007-05-27)
This study gives our analysis of the Raman frequencies for the lattice modes of v(5)TO(174 cm(-1)), v(5)TO(144 cm(-1)) and v(7)TA(93 cm(-1)), and an internal mode of v(2)(1708 cm(-1)) as functions of temperature in NH4Cl close to its lambda-phase transition (T-lambda = 241.2 K, P = 0). This analysis is performed using a power-law formula with the critical exponent beta for the order parameter according to the soft mode-hard mode coupling model.
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
H. Ozdemir and H. H. Yurtseven, “Pressure dependence of the Raman frequencies for the modes I, II and III at constant temperatures in phase II of benzene,”
JOURNAL OF MOLECULAR STRUCTURE
, pp. 117–121, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47264.