Физика Низких Температур: Том 27, Выпуск 9-10 (Сентябрь 2001), c. 1175-1178    ( к оглавлению , назад )

Lattice modes of solid nitrogen to 104 GPa

H. Olijnyk and A. P. Jephcoat

Department of Earth Sciences, University of Oxford, Oxford OX1 3PR, UK
E-mail: olijnykHGH@aol.com

Received May 4, 2001


Lattice modes of solid nitrogen were studied by Raman spectroscopy at room temperature to 104 GPa using the diamond anvil technique. Changes in the lattice mode spectral features correlate with those observed in the vibronic spectra suggesting symmetry changes of the crystal lattice. The changes in the spectral features mainly appear as branchings of existing modes supporting the view of a close structural relationship among these high pressure phases.

62.50.+p - High-pressure and shock wave effects in solids and liquids (for high pressure apparatus and techniques, see 07.35.+k; for shock wave initiated high-pressure chemistry, see 82.40.Fp; for high-pressure behavior of rocks and minerals, see 91.60.Gf; see also
63.20.-e - Phonons in crystal lattices (for phonons in superconductors, see 74.25.Kc; see also 43.35.Gk Phonons in crystal lattice, quantum acoustics�in acoustics appendix)
78.30.-j - Infrared and Raman spectra (for vibrational states in crystals and disordered systems, see 63.20.-e and 63.50.+x respectively)