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Etude de la Dispersion Angulaire des Modes Polaires d'un Monocristal de Phosphite de Lithium LiH 2 PO 3
Author(s) -
Beys Louis,
Hillaire Paul
Publication year - 1980
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250090602
Subject(s) - orthorhombic crystal system , dispersion (optics) , raman scattering , lithium (medication) , raman spectroscopy , polar , single crystal , chemistry , phonon , materials science , condensed matter physics , crystallography , crystal structure , physics , optics , medicine , astronomy , endocrinology
The angular dispersion of polar phonons with wave vectors k( k » ( ω/c )) rotating in the planes of symmetry of the orthorhombic LiH 2 PO 3 single crystal has been observed with Raman scattering experiments at T = 293 K in the regions 250–600 cm −1 and 850–1350 cm −1 . The agreement of the experimental data with the existing theories of angular dispersion is very satisfying.