Temperature and Pressure Effect on the Raman Frequencies Calculated from the Crystal Volume in the gamma-Phase of Solid Nitrogen

YURTSEVEN H. H., Unlu D.

JOURNAL OF APPLIED SPECTROSCOPY, cilt.82, sa.4, ss.700-704, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 82 Sayı: 4
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1007/s10812-015-0166-0
  • Dergi Adı: JOURNAL OF APPLIED SPECTROSCOPY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.700-704
  • Anahtar Kelimeler: Raman frequency, molar volume, mode Gruneisen parameter, gamma-phase, solid N-2, GRUNEISEN PARAMETERS, SPECTRA
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The temperature and pressure dependences of the Raman frequencies of the lattice modes (E-g and B-1g modes) and of an internal mode (2331 cm(-1)) are predicted using the observed molar volume data from the literature in the gamma-phase of solid N-2. This calculation is carried out by means of the mode Gruneisen parameter of each Raman mode in the gamma-phase of solid nitrogen. Our results show that the predicted Raman frequencies of the E-g mode increase as the pressure increases. The Raman frequencies of the other lattice mode (B-1g) and the internal mode (2331 cm(-1)) decrease with increasing pressure due to their negative Gruneisen parameters in the gamma-phase of solid N-2. The temperature effect on the Raman frequencies is negligibly small.