title: Spectroscopic modification of the Pippard relation applied for the translational mode in ammonia solid II near the melting point.
abstract: This study gives our calculation for the frequency shifts 1v partial differentialv partial differentialT(P) and the specific heat C(P) near the melting point in the ammonia solid II. We establish a linear relationship between C(P) and 1v partial differentialv partial differentialT(P) using the Raman frequencies of the translational mode which we calculated in this system. This leads to the validity of the spectroscopic modification of the first Pippard relation in the ammonia solid II near the melting point. From this linear variation of C(P) with the 1v partial differentialv partial differentialT(P) we deduce the slope values of dP(m)dT near the melting point for the fixed pressures of 3.65, 5.02 and 6.57 kbar in the ammonia solid II. They are compared with the experimental dP(m)dT values for this system.
authors.affiliation: Department of Physics, Middle East Technical University, Ankara 06531,Turkey. phys@metu.edu.tr
authors.forename: H
authors.initials: H
authors.lastname: Yurtseven
authors.forename: I
authors.initials: I
authors.lastname: Yildiz
mesh_terms: D000641:Ammonia / Q000737:chemistry*; D006358:Hot Temperature; D044367:Phase Transition; D013059:Spectrum Analysis, Raman; D044366:Transition Temperature
chemical_list: D000641:Ammonia