Show/Hide Menu
Hide/Show Apps
Logout
Türkçe
Türkçe
Search
Search
Login
Login
OpenMETU
OpenMETU
About
About
Open Science Policy
Open Science Policy
Open Access Guideline
Open Access Guideline
Postgraduate Thesis Guideline
Postgraduate Thesis Guideline
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 Modes Related to the Phase Transitions in Cyclohexane
Date
2015-03-01
Author
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
185
views
0
downloads
Cite This
The pressure dependence of the Raman frequencies for the v(21) mode is studied by using the volume data at room temperature close to the transitions among the phases of III, IV and V in cyclohexane. By determining the pressure dependence of the mode Gruneisen parameter gamma T in the phases and taking the average values, the Raman frequencies of those modes associated with the phase transitions are predicted through the volume data in cyclohexane. Our predicted Raman frequencies agree with those observed experimentally in this organic molecule. The Raman frequencies of the other modes can be calculated in cyclohexane and also in some molecular crystals using the method given here.
Subject Keywords
Solid cyclohexane
,
GPA
,
IV
URI
https://hdl.handle.net/11511/38280
Journal
ACTA PHYSICA POLONICA A
DOI
https://doi.org/10.12693/aphyspola.127.744
Collections
Department of Physics, Article
Suggestions
OpenMETU
Core
Temperature and Pressure Effect on the Raman Frequencies Calculated from the Crystal Volume in the gamma-Phase of Solid Nitrogen
Yurtseven, Hasan Hamit (Springer Science and Business Media LLC, 2015-09-01)
The temperature and pressure dependences of the Raman frequencies of the lattice modes (E-g and B-1g modes) and of an internal mode (2331 cm(-1)) are predicted using the observed molar volume data from the literature in the gamma-phase of solid N-2. This calculation is carried out by means of the mode Gruneisen parameter of each Raman mode in the gamma-phase of solid nitrogen. Our results show that the predicted Raman frequencies of the E-g mode increase as the pressure increases. The Raman frequencies of t...
Pressure dependence of the Raman frequency calculated from the volume data close to the ferroelectric-paraelectric transition in PbTiO3
Yurtseven, Hasan Hamit (2017-01-01)
We calculate the pressure dependence of the Raman frequencies of some Raman modes by using the observed volume data through the mode Gruneisen parameters for the ferroelectri-paraelectric transition in PbTiO3. The mode Gruneisen parameters which we have determined using the observed Raman frequencies for the soft modes, increase considerably with increasing pressure toward the transition pressure (PC similar to 11 GPa) from the tetragonal (ferroelectric) to the cubic (paraelectric) phase in PbTiO3. Variatio...
Pressure dependence of the Raman frequencies for the modes I, II and III at constant temperatures in phase II of benzene
Ozdemir, H.; Yurtseven, Hasan Hamit (Elsevier BV, 2015-01-25)
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...
Pressure dependence of the Raman frequencies for the translational mode in ammonia solid II
Yurtseven, Hasan Hamit (Elsevier BV, 2006-12-01)
We study here the translational mode of the ammonia solid II near the melting point by calculating its Raman frequencies as a function of pressure for the fixed temperatures of 230.4, 263.4 and 297.5 K. We perform this calculation of the Raman frequencies using the volume data by means of our Gruneisen relation. The Raman frequency shifts as the volume changes with the pressure, exhibit an anomalous behaviour near the melting point in the ammonia solid II.
Pressure-dependent Raman modes near the cubic-tetragonal transition in strontium titanate
KİRACI, ALİ; Yurtseven, Hasan Hamit (Wiley, 2018-03-01)
The pressure dependence of the Raman frequency shifts of various Raman modes is calculated at room temperature using the volume data from the literature for the cubic-tetragonal transition in SrTiO3. The isothermal mode Gruneisen parameters of those Raman modes are obtained, which decrease with increasing pressure for this molecular crystal. Calculated Raman frequencies are then used to predict the damping constant and the inverse relaxation time of those Raman modes as a function of pressure by means of th...
Citation Formats
IEEE
ACM
APA
CHICAGO
MLA
BibTeX
H. H. Yurtseven, “Pressure Dependence of the Raman Modes Related to the Phase Transitions in Cyclohexane,”
ACTA PHYSICA POLONICA A
, pp. 744–747, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/38280.