Issue
J. Phys. France
Volume 26, Number 11, novembre 1965
Page(s) 627 - 629
DOI https://doi.org/10.1051/jphys:019650026011062700
J. Phys. France 26, 627-629 (1965)
DOI: 10.1051/jphys:019650026011062700

The Raman spectrum of magnesium fluoride

R.S. Krishnan et R.S. Katiyar

Department of Physics, Indian Institute of Science, Bengalore 12


Abstract
The Raman spectrum of a single crystal of MgF2 has been investigated using the resonance radiation of mercury as exciter. The observed Raman lines are of frequency shifts 73, 90, 154, 165, 295, 405, 415, 560, 2 472 and 2 535 cm-1. An analysis of the vibration spectrum has been made taking into account the infrared data of Barker, and the force constants have been calculated. The force constants suggest that the structure of MgF 2 has considerable molecular character.


Résumé
On a étudié le spectre Raman d'un monocristal de MgF2, excité par la radiation de résonance du mercure. Les raies Raman observées correspondent à des déplacements de fréquence 73, 90, 154, 165, 295, 405,,415, 560, 2472 et 2535 cm-1. Ce spectre a été analysé à partir des données infrarouges de Barker, et les constantes de force ont été calculées. Les valeurs de ces constantes suggèrent un caractère fortement moléculaire de la structure de MgF2.

PACS
78 - Optical properties, condensed-matter spectroscopy and other interactions of radiation and particles with condensed matter.

Key words
magnesium compounds -- Raman spectra