✦ LIBER ✦

Oblique Phonons in Raman Scattering and IR Reflection of TeO2 Crystal

✍ Scribed by Prof. Dr. hab. N. N. Syrbu; R. V. Cretu; V. Z. Cebotari; Prof. Dr. hab. V. P. Mushinskii

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 628 KB
Volume: 31
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.2170310723

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✦ Synopsis

Oblique Phonons in Raman Scattering and IR Reflection of TeOZ Crystal

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 reflectivity and Raman spectra have been investigated. The peculliarities of the transition from longitudinal mode to transverse one and vice versa both with and without changing of symmetry have been obtained. The phonon parameters and effective ionic charges of the anions and cations have been determined. It has been shown that there exists an effective ionic charge anisotropy of the oxygen and tellurium ions.

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