THERMODYNAMIC QUANTITIES AT HIGH PRESSURES IN THE i AND theta PHASES OF SOLID NITROGEN DEDUCED BY RAMAN FREQUENCY SHIFTS FOR THE INTERNAL MODES IN LITERATURE

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YURTSEVEN H. H., Saritas S.

INTERNATIONAL JOURNAL OF MODERN PHYSICS B, vol.27, no.9, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 27 Issue: 9
  • Publication Date: 2013
  • Doi Number: 10.1142/s0217979213500355
  • Journal Name: INTERNATIONAL JOURNAL OF MODERN PHYSICS B
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Internal modes, i phase, theta phase, solid nitrogen, X-RAY-DIFFRACTION, GPA, TEMPERATURE, N-2, SPECTRUM, SPECTROSCOPY, SCATTERING, ALPHA-N2, CRYSTALS, DYNAMICS
  • Middle East Technical University Affiliated: Yes

Abstract

The pressure dependence of the Raman frequencies of the internal modes is analyzed (T = 300 K) for the phases i and theta of solid nitrogen using the experimental data from the literature. Through the mode Gruneisen parameter, the isothermal compressibility kappa(T), thermal expansion alpha(p) and the specific heat C-p - C-v are calculated as a function of pressure using the Raman data in these phases.