Far-IR studies on In2Se3 layered materials
β Scribed by I. Lelidis; D. Siapkas; C. Julien; M. Balkanski
- Publisher
- Elsevier Science
- Year
- 1989
- Tongue
- English
- Weight
- 306 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0921-5107
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This work reports on a study of the infrared active long-wavelength optical phonons of the layered semiconductor ln2Se 3. The temperature dependence behaviour is investigated between 10 K and 500 K, and the intermediate phases a'-and fl'-ln2Se 3 are evidenced by reflectivity measurements for the E Β±
The location of sodium and calcium cations in zeolite A has been studied using far-IR spectroscopy. Spectroscopic measurements show a shift in the vibrational spectra with the partial replacement of Na+ by Ca'+ cations in the zeolite matrix. The magnitude of these shifts is observed to be dependent