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Angular dispersion of phonons in biaxial NaNO 2
Author(s) -
Bonilla I. R.,
Rutt H. N.
Publication year - 1975
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.2220690210
Subject(s) - phonon , dispersion (optics) , condensed matter physics , polar , dispersion relation , materials science , optics , physics , quantum mechanics
Angular dispersion curves for polar phonons in biaxial crystals are experimentally verified for sodium nitrite. Both crossing and repulsion of phonons are expected and observed, and an important difference between biaxial and uniaxial crystals is noted.