Temperature and pressure dependence of the mode Gruneisen parameters close to the melting point in hexagonal ice

Date

2007-02-01

Author

Karacali, H.
Yurtseven, Hasan Hamit

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We reexamine the Pippard relations in this study by relating the specific heat C-P to the Raman frequency shifts 1/v(partial derivative v/partial derivative T)(P) and the thermal expansivity alpha(p) to the 1/v(partial derivative v/partial derivative P)(T), when the mode Gruneisen parameter depends on the temperature and pressure close to the melting point in hexagonal ice. From linear relations between them, the values of the slope dP/dT are deduced in this crystal.

Subject Keywords

Instrumentation, Analytical Chemistry, Spectroscopy, Atomic and Molecular Physics, and Optics

URI

https://hdl.handle.net/11511/35227

Journal

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

DOI

https://doi.org/10.1016/j.saa.2006.02.064

Collections

Department of Physics, Article

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Temperature and pressure dependence of the Raman frequency shifts near the melting point in ice I Yurtseven, Hasan Hamit (Elsevier BV, 2006-06-01) This study examines the validity of the spectroscopic modification of the Pippard relations for the hexagonal ice (ice I) close to the melting point. A linear variation of the specific heat C-P with the frequency shifts 1/nu(partial derivative nu/partial derivative P)(p) is obtained for ice I. This linearity is also obtained between thermal expansivity alpha P and the frequency shifts (partial derivative nu/partial derivative P)(T) close to the melting point in this crystal.
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.

Citation Formats

H. Karacali and H. H. Yurtseven, “Temperature and pressure dependence of the mode Gruneisen parameters close to the melting point in hexagonal ice,” SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, pp. 487–492, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/35227.