We present and discuss reflectance and trasmittance measurements on CrSi, polycrystalline films in the (100 + 700) cm-' wavenumber range. The spectra show that the compound has a nonmetallic behaviour. The strong and sharp structures observed are interpreted on the basis of the symmetry properties of the normal modes of CrSie, and their strength is attributed to a dynamical charge. Moreover, preliminary lattice dynamicscalculations allow to explain the relative intensity of the infrared-active modes.
Far Infrared Vibrational Spectroscopy in CrSi_2 / A., Borghesi; A., Piaggi; Franchini, Anna; G., Guizzetti; Nava, Filippo; Santoro, Giorgio. - In: EUROPHYSICS LETTERS. - ISSN 0295-5075. - STAMPA. - 11:(1990), pp. 61-65. [10.1209/0295-5075/11/1/011]
Far Infrared Vibrational Spectroscopy in CrSi_2
FRANCHINI, Anna;NAVA, Filippo;SANTORO, Giorgio
1990
Abstract
We present and discuss reflectance and trasmittance measurements on CrSi, polycrystalline films in the (100 + 700) cm-' wavenumber range. The spectra show that the compound has a nonmetallic behaviour. The strong and sharp structures observed are interpreted on the basis of the symmetry properties of the normal modes of CrSie, and their strength is attributed to a dynamical charge. Moreover, preliminary lattice dynamicscalculations allow to explain the relative intensity of the infrared-active modes.
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