Specific heat and frequency shifts for the translational modes in ammonia solid I close to phase transition

Date

2007-07-01

Author

Yurtseven, Hasan Hamit

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The specific heat C-p is correlated to the frequency shifts (1/v)(partial derivative v/partial derivative T)(p) in ammonia solid I close to the melting point. Our calculated Raman frequencies for the translational modes of v(T) (100 cm(-1)) and v(T) (130 cm(-1)), are used for this correlation for the pressures of 0, 1.93 and 3.07 kbar in this crystalline system. We obtain that the specific heat varied linearly with the frequency shifts for those pressures studied and values of the slope dP(m)/dT were extracted. The observed behaviour of the ammonia solid I near the melting point is explained on the basis of our spectroscopic modification of the first Pippard relation.

Subject Keywords

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

URI

https://hdl.handle.net/11511/41225

Journal

SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY

DOI

https://doi.org/10.1016/j.saa.2006.08.046

Collections

Department of Physics, Article

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Citation Formats

H. H. Yurtseven, “Specific heat and frequency shifts for the translational modes in ammonia solid I close to phase transition,” SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY, pp. 1060–1066, 2007, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/41225.