Optical absorption in amorphous semiconductors SmS, SmSe and SmTe
| Autor: | G.V Lashkarev, L.A Ivanchenko |
|---|---|
| Rok vydání: | 1972 |
| Předmět: |
Materials science
Condensed matter physics Absorption spectroscopy Analytical chemistry Condensed Matter Physics Magnetic susceptibility Electronic Optical and Magnetic Materials Amorphous solid Absorption edge Hall effect Atomic electron transition Materials Chemistry Ceramics and Composites Crystallite Absorption (electromagnetic radiation) |
| Zdroj: | Journal of Non-Crystalline Solids. :670-675 |
| ISSN: | 0022-3093 |
| Popis: | Absorption spectra of amorphous films and diffusive reflection of polycrystalline powders of samarium monochalcogenides SmS, SmSe and SmTe were investigated within 0.18–4.3 eV at T = 300 °K. Diffusive reflection spectra are characterized by absorption edge at 0.24, 0.75 and 0.70 eV for SmS, SmSe and SmTe accordingly. They are connected with electronic transitions form 4f6-level of Sm2+ion to 5d-conduction band. The last is confirmed by coincidence of optical transition energies with energies obtained from temperature dependencies of electrical conductivity, Hall effect and magnetic susceptibility. |
| Databáze: | OpenAIRE |
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