SYRBU, N. N.; CRETU, R. V.; CEBOTARI, V. Z.; MUSHINSKII, V. P.
(WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim, 1996)
The Raman scattering and IR reflectivity have been investigated for different crystal configurations. The contours of reflectivity spectra have been calculated. The angle dependence of polar vibrational modes in both ...