This study gives our calculations for the temperature-pressure and
temperature-concentration phase diagrams using the mean field models applied to
ammonium halides (NH4Cl, ND4Cl), ammonium sulfate ((NH4)2SO4/H2O), lithium
potassium rubidium sulfate (LiK1-xRbxSO4), potassium pyrosulfate-potassium
hydrogensulfate (K2S2O7-KHSO4), cholestanyl myristate-cholesteryl myristate
(CnM-CrM), cholestanyl myristate-cholesteryl oleate (CnM-CO), benzene (C6H6)
and ice. The phase line equations are derived from the free energies expanded in
terms of the order parameters and they are fitted to the experimental data. Some
thermodynamic quantities are calculated close to phase transitions in these
crystalline systems.
We also calculate the specific heat CV using the Raman frequency shifts for
NH4Br on the basis of an Ising model close to the lambda-phase transition. A linear
relationship is obtained between the specific heat CP and the frequency shifts
(1/v)(dv/dT)P near the lambda-point in NH4Br.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/2/12610436/index.pdf |
| Date | 01 February 2009 |
| Creators | Sen, Sema |
| Contributors | Yurtseven, Hamit |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | Ph.D. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for METU campus |
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