Effective ionic charges in CdGa2Se4 and CdGa2S4
โ Scribed by P.P. Lottici; A. Parisini; C. Razzetti; P. Carra
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 291 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0038-1098
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Polarization-dependent infrared reflectivity spectra of CdGazS, are measured a t 300 K in the wavenumber range from 180 to 500 cm-1. The analysis of the spectra yields three E and four R modes in this frequency range. The results are compared with previously published data and a final identification
The first observation of optical activity and circular dichroism in the defect chalcopyrite semiconducting compound hCdGa 2 S 4 is reported. Optical absorption spectra were recorded at 300 and 25 K under non-polarised radiation as well as under different directions of polarisation of incident radiat