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Type of publication: Straipsnis Clarivate Analytics Web of Science ar/ir Scopus / Article in Clarivate Analytics Web of Science or / and Scopus (S1)
Field of Science: Fizika / Physics (N002)
Author(s): Audzijonis, Algirdas;Rėza, Alfonsas;Žaltauskas, Raimundas;Žigas, Leonardas;Sereika, Raimundas;Paškevič, Č;Pauliukas, Audrius
Title: Spectroscopic ellipsometry studies of ferroelectric SbSexS1xI crystals
Is part of: Ferroelectrics. , Vol. 366, iss. 1 (2008)
Extent: p. 45-54
Date: 2008
Keywords: Spectroscopic ellipsometry;Dielectric constants;SbSeI;SbSI
Abstract: In the present paper the optical spectra were measured by spectroscopic ellipsometry method in the range of 0.5-5.0 eV making use of a computer-controlled photometric ellipsometer with a rotating analyzer. The measurement data were traded in terms of a pseudodielectric function (PDF) in framework of the two-phase isotropic ambient-anisotropic homogeneous sample approximation. Anisotropic properties of the sample were revealed by performing the measurement with the sample at two orthogonal orientations with respect to the plane incidence. Two components of the dielectric tensor for crystal of orthorhombic symmetry were determined. The experimental spectra of the dielectric tensor components were approximated by the contributions of Laurence oscillators in order to determine the main optical transitions to the optical response
Affiliation(s): Vilniaus universiteto Teorinės fizikos ir astronomijos institutas
Vytauto Didžiojo universitetas
Švietimo akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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