Analysis of the specific heat of p-azoxyanisole (PAA) near the phase transitions

Date

2010-01-01

Author

Kilit, E.
Yurtseven, Hasan Hamit

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The analysis of the experimental data for the specific heat Cp at various temperatures is given here near the nematic-isotropic liquid (TNI = 133.9 degrees C) and the solid-nematic (TSN = 117.6 degrees C) transitions in p-azoxyanisole (PAA). The analysis of the specific heat Cp is performed according to a simple power-law formula and a renormalisation-group expression. The values of the critical exponent are extracted above and below the transition temperatures of TNI and TSN for this liquid crystalline material. Our exponent values are compared with the predictions of a three-dimensional Ising model and XY model for liquid crystals. Using the specific heat Cp, the temperature dependence of the enthalpy H and the entropy S is calculated in the nematic phase (T TSN) of p-azoxyanisole.

Subject Keywords

Physical and Theoretical Chemistry, Materials Chemistry, Electronic, Optical and Magnetic Materials, Condensed Matter Physics

URI

https://hdl.handle.net/11511/47190

Journal

PHYSICS AND CHEMISTRY OF LIQUIDS

DOI

https://doi.org/10.1080/00319100902946445

Collections

Department of Physics, Article

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Citation Formats

E. Kilit and H. H. Yurtseven, “Analysis of the specific heat of p-azoxyanisole (PAA) near the phase transitions,” PHYSICS AND CHEMISTRY OF LIQUIDS, pp. 450–460, 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/47190.