Browsing by Author "Tarı, Özlem"
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Analysis of vibrational spectra in relation to the thermodynamic quantities close to the phase transitions in ammonium halides (NH4F and NH4I)
Tarı, Özlem; Yurtseven, Hamit (Elsevier, 2017)The pressure dependences of the vibrational frequencies of the TO and L modes are analyzed from the literature data and the thermodynamic quantities such as isothermal compressibility K gamma, thermal expansion alpha p and ... 
Calculation of the Raman frequencies as a function of pressure in the solid phases II and III (III’) of benzene
Yurtseven, Hamit; Tarı, Özlem (Springer, 2013)We calculate here the Raman frequencies of the lattice modes A(Ag), B(B2g) and C(B1gB3g) as a function of pressure at room temperature for the solid phases (II, III and III’) of benzene. This calculation is performed using ... 
Calculation of the Raman frequencies as a function of temperature in phase I of benzene
Tarı, Özlem; Yurtseven, Hamit (Journal of Indian Chemical Society, 2013)This study gives our calculation of the Raman frequencies of the lattice modes A (A1g), B (AgB2g) and C (B1gB3g) as a function of temperature at constant pressures of 0, 1.4 and 3.05 GPa for the solid phase I of benzene. ... 
Calculation of the spontaneous polarization for Pb1xCaxTiO3 close to the tricritical point
Tarı, Özlem; Yurtseven, Hamit (Taylor & Francis, 2016)We calculate the spontaneous polarization as a function of temperature for a mixed crystal of Pb1xCaxTiO3 close to the tricritical pointdx (x = 0.4). This calculation of the spontaneous polarization is performed using the ... 
Calculation of the thermodynamic quantities of perovskite metal organics DMAKCr and perovskite HyFe close to the weakly firstorder relaxorlike structural transformation using the mean field theory
Yurtseven, Hamit; Tarı, Özlem (World Scientific Pub., 20190430)Weakly firstorder or nearly secondorder phase transitions occurring in metal{organic frameworks (MOFs), particularly in DMAKCr and perovskite HyFe, are studied under the mean field model by using the observed data from ... 
Modelling of swelling by the fluorescence technique in kappa carrageenan gels
Tarı, Özlem; Pekcan, Önder (American Institute of PhysicsAIP Conference Proceedings, 2011)Kappa () carrageenan gels prepared with various carrageenan concentrations in pure water were completely dried and then swelled in water vapor. Steady state fluorescence measurements were performed using a spectrometer ... 
Pressure dependence of the heat capacity near the melting point in benzene
Yurtseven, Hamit; Tarı, Özlem (Elsevier Science, 2017)The heat capacity Cp is calculated as a function of pressure at constant temperatures of 25, 40 and 51 degrees C for the solid and liquid phases of benzene near the melting point. For this calculation, the observed molar ... 
Pressure effect on the cholesteric – smectic A transition in cholestryl myristate
Yurtseven, Hamit; Yolal, B.; Tarı, Özlem (Taylor & Francis, 2016)Cholesteryl myristate exhibits tricritical behavior under high pressures close to its cholestericsmectic A (Ch/SA) transition, as observed experimentally. We study here the thermodynamic properties of this liquid crystal ... 
Raman frequencies calculated at various pressures in phase I of benzene
Tarı, Özlem; Yurtseven, Hamit (KCS Publications, 2013)We calculate in this study the pressure dependence of the frequencies for the Raman modes of A (Ag), B (Ag, B2g) and C (B1g, B3g) at constant temperatures of 274 and 294K (room temperature) for the solid phase I of benzene. ... 
Temperature dependence of magnetic and thermal properties of chiral HyFe and HyMn close to phase transitions by using the Landau mean field model
Tarı, Özlem; Yurtseven, Hamit (Elsevier Science, 2019)Magnetic and thermal properties of chiral metal formate frameworks (MOFs) of NH2NH3M(HCOO)(3), M = Fe, Mn, namely, HyFe and HyMn are investigated close to phase transitions by using Landau phenomenological model. By expanding ...