Interband absorption and its relation to the electronic structure of Co-Cr solid solutions
The refraction n and absorption χ indices of paramagnetic Сo-Cr alloys with 10, 20 and 35% chromium concentrations were measured within the spectral range 0.23 to 2.8 µm (0.44…5.36 eV) at room temperature by spectral ellipsometric methods. Based on these data, the dielectric permittivity ε, op...
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| Datum: | 2013 |
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Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України
2013
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| Schriftenreihe: | Semiconductor Physics Quantum Electronics & Optoelectronics |
| Online Zugang: | http://dspace.nbuv.gov.ua/handle/123456789/117666 |
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| Zitieren: | Interband absorption and its relation to the electronic structure of Co-Cr solid solutions / V.M. Bondar, V.S. Stashchuk, O.P. Polianska, V.G. Kudin, A.O. Statsenko // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2013. — Т. 16, № 1. — С. 76-79. — Бібліогр.: 14 назв. — англ. |
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irk-123456789-1176662017-05-27T03:05:54Z Interband absorption and its relation to the electronic structure of Co-Cr solid solutions Bondar, V.M. Stashchuk, V.S. Polianska, O.P. Kudin, V.G. Statsenko, A.O. The refraction n and absorption χ indices of paramagnetic Сo-Cr alloys with 10, 20 and 35% chromium concentrations were measured within the spectral range 0.23 to 2.8 µm (0.44…5.36 eV) at room temperature by spectral ellipsometric methods. Based on these data, the dielectric permittivity ε, optical conductivity σ and reflection coefficient R at normal incidence were calculated. The dispersion of optical conductivity σ(hν) and dispersion curves of residual optical conductivity σ(hν) = σ(hν) – (1 – c) σCo(hν) were analyzed in detail (c – Cr impurity concentration, σCo(hν) – optical conductivity of Co solvent). It has been ascertained that new impurity bands are formed in the electronic spectrum of Co solvent when Cr impurities are added, which are responsible for the extra absorption in Сo-Cr alloys. The localization of impurity energy levels in Co-Cr alloys at 1.8…2.0 eV above the Fermi level has been suggested. 2013 Article Interband absorption and its relation to the electronic structure of Co-Cr solid solutions / V.M. Bondar, V.S. Stashchuk, O.P. Polianska, V.G. Kudin, A.O. Statsenko // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2013. — Т. 16, № 1. — С. 76-79. — Бібліогр.: 14 назв. — англ. 1560-8034 PACS 71.20.-b, 78.20.Ci, 78.20.-e, 78.40.-q http://dspace.nbuv.gov.ua/handle/123456789/117666 en Semiconductor Physics Quantum Electronics & Optoelectronics Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| language |
English |
| description |
The refraction n and absorption χ indices of paramagnetic Сo-Cr alloys with
10, 20 and 35% chromium concentrations were measured within the spectral range 0.23
to 2.8 µm (0.44…5.36 eV) at room temperature by spectral ellipsometric methods. Based
on these data, the dielectric permittivity ε, optical conductivity σ and reflection
coefficient R at normal incidence were calculated. The dispersion of optical conductivity
σ(hν) and dispersion curves of residual optical conductivity σ(hν) = σ(hν) – (1 – c) σCo(hν) were analyzed in detail (c – Cr impurity concentration, σCo(hν) – optical
conductivity of Co solvent). It has been ascertained that new impurity bands are formed
in the electronic spectrum of Co solvent when Cr impurities are added, which are
responsible for the extra absorption in Сo-Cr alloys. The localization of impurity energy
levels in Co-Cr alloys at 1.8…2.0 eV above the Fermi level has been suggested. |
| format |
Article |
| author |
Bondar, V.M. Stashchuk, V.S. Polianska, O.P. Kudin, V.G. Statsenko, A.O. |
| spellingShingle |
Bondar, V.M. Stashchuk, V.S. Polianska, O.P. Kudin, V.G. Statsenko, A.O. Interband absorption and its relation to the electronic structure of Co-Cr solid solutions Semiconductor Physics Quantum Electronics & Optoelectronics |
| author_facet |
Bondar, V.M. Stashchuk, V.S. Polianska, O.P. Kudin, V.G. Statsenko, A.O. |
| author_sort |
Bondar, V.M. |
| title |
Interband absorption and its relation to the electronic structure of Co-Cr solid solutions |
| title_short |
Interband absorption and its relation to the electronic structure of Co-Cr solid solutions |
| title_full |
Interband absorption and its relation to the electronic structure of Co-Cr solid solutions |
| title_fullStr |
Interband absorption and its relation to the electronic structure of Co-Cr solid solutions |
| title_full_unstemmed |
Interband absorption and its relation to the electronic structure of Co-Cr solid solutions |
| title_sort |
interband absorption and its relation to the electronic structure of co-cr solid solutions |
| publisher |
Інститут фізики напівпровідників імені В.Є. Лашкарьова НАН України |
| publishDate |
2013 |
| url |
http://dspace.nbuv.gov.ua/handle/123456789/117666 |
| citation_txt |
Interband absorption and its relation
to the electronic structure of Co-Cr solid solutions / V.M. Bondar, V.S. Stashchuk, O.P. Polianska, V.G. Kudin, A.O. Statsenko // Semiconductor Physics Quantum Electronics & Optoelectronics. — 2013. — Т. 16, № 1. — С. 76-79. — Бібліогр.: 14 назв. — англ. |
| series |
Semiconductor Physics Quantum Electronics & Optoelectronics |
| work_keys_str_mv |
AT bondarvm interbandabsorptionanditsrelationtotheelectronicstructureofcocrsolidsolutions AT stashchukvs interbandabsorptionanditsrelationtotheelectronicstructureofcocrsolidsolutions AT polianskaop interbandabsorptionanditsrelationtotheelectronicstructureofcocrsolidsolutions AT kudinvg interbandabsorptionanditsrelationtotheelectronicstructureofcocrsolidsolutions AT statsenkoao interbandabsorptionanditsrelationtotheelectronicstructureofcocrsolidsolutions |
| first_indexed |
2025-07-01T09:26:42Z |
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2025-07-01T09:26:42Z |
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1836436163714351104 |