Optical properties of BiSBr and BiSeBr crystals

Autor:	Raimundas Sereika, Algirdas Audzijonis, Alfonsas Rėza, R. Žaltauskas
Rok vydání:	2011
Předmět:	Range (particle radiation) Chemistry Plane wave Physics::Optics General Chemistry Molar absorptivity Condensed Matter Physics Molecular physics Crystal Quantum mechanics General Materials Science Anisotropy Refractive index Plasmon Optical absorption coefficient
Zdroj:	Journal of Physics and Chemistry of Solids. 72:1501-1505
ISSN:	0022-3697
Popis:	Optical properties of BiSBr and BiSeBr crystals were investigated by the full potential linearized augmented plane wave (FP-LAPW) method with density-functional theory (DFT). The complex dielectric function and optical constants, such as optical absorption coefficient, refractive index, extinction coefficient, energy-loss spectrum and reflectivity, were calculated and compared in the energy range of 0–30 eV. Origin of anisotropic behavior of optical spectra was also discussed. The plasmon energy ℏ ω p was estimated to be 18 eV for BiSeBr and 20 eV for BiSBr crystal.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c81c3decdcac40dbbb1fb27e19ed256d https://doi.org/10.1016/j.jpcs.2011.09.010 Zobrazit plný text záznamu Full Text from ScienceDirect