Far Infrared Spectra in (As2Se3)1-x(Sb2Se3)x Glasses
- 1 November 1981
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 20 (11)
- https://doi.org/10.1143/jjap.20.2013
Abstract
Far infrared reflectivity spectra in (As2Se3)1-x (Sb2Se3) x (0 ≤x ≤0.4) glasses were studied in the spectral region 80–500 cm-1 at room temperature. Two-mode type behavior of the dominant modes observed in the spectra is shown to be characterized quite well by the local vibrations of As-Se3 and Sb-Se3 pyramidal molecular units. The oscillator strength for the Sb-Se3 unit is ca. 2.5 times larger than that for the As-Se3 unit. Predominance of heterobonding and valency conservation for the elements are deduced from this study. The effective charge e * for the dominant mode of the Sb-Se3 unit is calculated to be ca. 3.70e which is about 1.7 times larger than that of the As-Se3 unit. The stretching force constants K As-Se and K Sb-Se were calculated to be ∼1.77 and ∼1.65×105 dyns/cm, respectively.Keywords
This publication has 28 references indexed in Scilit:
- Raman Scattering in Amorphous (As2Se3)1-x(Sb2Se3)x SystemJapanese Journal of Applied Physics, 1980
- Raman Scattering in Amorphous As-Se SystemJapanese Journal of Applied Physics, 1980
- Major difference in the vibrational spectra and structure of (As2S3)1−x(GeS2)x and As2S3Gex glassesPhysica Status Solidi (b), 1979
- Infrared Reflection and Raman Scattering Studies of the Vibrational Properties and Structure of As2S3Gex GlassesPhysica Status Solidi (b), 1979
- Infrared lattice vibrations and dielectric dispersion inPhysical Review B, 1977
- Coordination dependent vibrational properties of amorphous semiconductors alloysSolid State Communications, 1975
- Optic Modes in Amorphous andPhysical Review B, 1972
- Lattice Vibrations and Interlayer Interactions in Crystalline andPhysical Review B, 1971
- On the nature of the optical vibrations in As2S3 and As2Se3 glassesPhysica Status Solidi (a), 1971
- THE NATURE OF THE CHEMICAL BOND. IV. THE ENERGY OF SINGLE BONDS AND THE RELATIVE ELECTRONEGATIVITY OF ATOMSJournal of the American Chemical Society, 1932