Calculation of the thermodynamic quantities of a perovskite metal organic DMAKCr close to the first-order relaxor-like structural transformation using the mean field theory

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2018-05-04

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Yurtseven, Hasan Hamit

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https://hdl.handle.net/11511/75947

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Calculation of the thermodynamic quantities of perovskite metal organics DMAKCr and perovskite HyFe close to the weakly first-order relaxor-like structural transformation using the mean field theory Yurtseven, Hasan Hamit (World Scientific Pub Co Pte Lt, 2019-04-30) Weakly first-order or nearly second-order 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 the literature. In this work, mainly thermal and magnetic properties among various physical properties which have been reported in the literature for those MOFs are studied by the mean field theory. By expanding the free energy in terms of the magnetization (order parameter), the excess hea...
Calculation of the Liquid-Solid Phase Diagram and the Thermodynamic Quantities of the Binary System of Tetradecane and Hexadecane Using the Mean Field Theory Yurtseven, Hasan Hamit; Tari, O. (2021-10-01) The T - x phase diagram of a binary system of tetradecane + hexadecane is calculated using the Landau phenomenological model. Expressions derived for the phase lines are fitted to experimental data from the literature and the fitted parameters are determined for the transitions of liquid-solid I, liquid-solid II and solid I-solid II in this binary system. The temperature dependence of the thermodynamic quantities, including the order parameter, susceptibility, enthalpy, entropy, heat capacity, thermal expan...
Calculation of the T – X phase diagram of tetradecane + hexadecane and tetradecane + pentadecane under high pressure by the landau mean field theory Tari, O.; Yurtseven, Hasan Hamit (2022-08-01) © 2022 Elsevier B.V.Landau phenomenological model is applied to two binary mixtures (tetradecane + hexadecane and tetradecane + pentadecane) to calculate T−x (temperature - composition) phase diagram under high pressure for their solid – liquid equilibria. The phase line equation derived from the free energy of the solid phase is fitted to the experimental liquidus curve (T−x) from the literature and the parameters in the Landau expansion are determined. As observed experimentally, variation of the temperat...
Calculation of the T-P Phase Diagrams for the Halogenomethane Compounds (CCl4-nBrn, n=0, 1, 2, 4) Using the Mean Field Theory Yurtseven, Hasan Hamit; Dogan, E. Kilit (Pleiades Publishing Ltd, 2019-02-01) The T-P phase diagrams of the halogenomethane compounds (CCl4-nBrn, n = 0, 1, 2, 4) are calculated using a mean field model. By expanding the free energy in terms of the order parameters for the transitions of the liquid (L), rhombohedral (R), face-centered cubic (FCC) and monoclinic (M) phases in those compounds, the phase line equations are derived and they are fitted to the experimental data from the literature. This method of calculating the T-P phase diagram is satisfactory to explain the T-P measureme...
Calculation of the Dielectric Constant as a Function of Temperature Close to the Smectic A-Smectic B Transition in B5 Using the Mean Field Model Yurtseven, Hasan Hamit (2012-01-01) The temperature dependence of the static dielectric constant (epsilon) is calculated close to the smectic A-smectic B (S-A-S-B) transition (T-c = 71.3 degrees C) for the liquid crystal compound B5. By expanding the free energy in terms of the order parameter in the mean field theory, the expression for the dielectric susceptibility (dielectric constant) is derived and is fitted to the experimental data for epsilon which was obtained at the field strengths of 0 and 67 kV/cm from literature. Coefficients in t...

Citation Formats

H. H. Yurtseven, “Calculation of the thermodynamic quantities of a perovskite metal organic DMAKCr close to the first-order relaxor-like structural transformation using the mean field theory,” 2018, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/75947.