| Conţinutul numărului revistei |
| Articolul precedent |
| Articolul urmator |
 223 0 |
 SM ISO690:2012SYRBU, Nicolae, ZALAMAI, Victor, GUK, Maxim, LEVCENKO, Sergiu, DOROGAN, Andrei, ARUSHANOV, Ernest. Birefringence of Cu2ZnSiSe4 single crystals. In: Journal of Alloys and Compounds, 2015, vol. 635, pp. 188-193. ISSN 0925-8388. DOI: https://doi.org/10.1016/j.jallcom.2015.02.100 |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
  Journal of Alloys and Compounds |
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| Volumul 635 / 2015 / ISSN 0925-8388 | ||||||
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| DOI:https://doi.org/10.1016/j.jallcom.2015.02.100 | ||||||
| Pag. 188-193 | ||||||
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| Rezumat | ||||||
In Cu2ZnSiSe4 single crystals an interference spectra of the Fabry-Perot type due to observed birefringence were studied and spectral dependence of the refractive index n∥ (E ∥ c) and n⊥ (E ⊥ c), which intersect at isotropic wavelength λ0 = 622 nm (300 K) and 605 nm (10 K) were defined. The spectral dependence of Δn = n⊥-n∥ in the short-wave and long-wave side of the wavelength λ0 was determined. It was found that when λ > λ0 Δn is negative and when λ < λ0 Δn is positive. Wavelength λ0 shifts as the temperature decreases toward shorter wavelengths. Phases of the n∥ and n⊥ light waves in λ > λ0 and λ < λ0 are different. At a wavelength of 538 nm (10 K) Δn has a maximum. Absorption coefficient in the fringes varies up to 102-103 times. |
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| Cuvinte-cheie Birefringence, Cu2ZnSiSe4, Fabry-Perot interference, Isotropic wavelength, Single crystal |
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