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The Raman Spectrum of NaNO 2 in the Ferroelectric Phase
Author(s) -
Chisler E. V.,
Shur M. S.
Publication year - 1966
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19660170121
Subject(s) - ferroelectricity , raman spectroscopy , coulomb , polarization (electrochemistry) , vibration , translational symmetry , condensed matter physics , nano , phase (matter) , physics , materials science , symmetry (geometry) , molecular physics , optics , quantum mechanics , chemistry , geometry , dielectric , mathematics , electron
Abstract The Raman spectrum of a NaNO 2 single crystal in the ferroelectric phase is obtained and the polarization of the lines is investigated. The forms of normal vibrations are considered on the basis of symmetry coordinates and the intensity of lines. Formulae for translational vibrations are derived and numerical calculations are performed taking into account shortrange repulsive forces between nearest neighbours and long‐range Coulomb forces.