Far-infrared spectra of dysprosium doped yttrium aluminum garnet nanopowder
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Rabasović, Maja S.
Savić-Šević, Svetlana N.
Šević, Dragutin M.
Babić, Biljana M.
Romčević, Maja J.
Ristić-Đurović, Jasna L.
Paunović, Novica M.
Romčević, Nebojša Ž.
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The solution combustion synthesis was used to prepare nanopowders of yttrium aluminum garnet (YAG) and YAG doped with dysprosium ions, Dy3+, (YAG:Dy). The morphology, specific surface area, texture, and optical properties of the prepared materials were studied by the means of scanning electron microscopy (SEM), nitrogen adsorption method, and far-infrared spectroscopy at room temperature in the spectral region between 80 and 600 cm(-1). It was established that all the examined samples were microporous. The Maxwell-Garnet formula was used to model dielectric function of YAG and YAG:Dy nanopowders as mixtures of homogenous spherical inclusions in air. (C) 2016 Elsevier B.V. All rights reserved.
Кључне речи:Y3Al5O12 / Dy3+ / Nanopowders / Light absorption and reflection
Извор:Infrared Physics and Technology, 2016, 77, 226-229
ISSN: 1350-4495 (print); 1879-0275 (electronic)