کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1609163 1516258 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Birefringence of Cu2ZnSiSe4 single crystals
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فلزات و آلیاژها
پیش نمایش صفحه اول مقاله
Birefringence of Cu2ZnSiSe4 single crystals
چکیده انگلیسی
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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Alloys and Compounds - Volume 635, 25 June 2015, Pages 188-193
نویسندگان
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