title: Photoluminescence and photoacoustic spectroscopies of Fe(3+) in the LiGa5O8-LiGaSiO4-Li5GaSi2O8 system.
abstract: This report is devoted to the study of the low and room temperature photoluminescence and photoacoustic spectroscopy of the Fe(3+) impurity ion in the LiGa(5)O(8)-LiGaSiO(4)-Li(5)GaSi(2)O(8) system. The sample was obtained by solid-state reaction between beta-Ga(2)O(3), Li(2)CO(3), SiO(2) and appropriated quantities of Fe(2)O(3). It was investigated by X-ray diffraction to determine the formed phases and through photoluminescence, excitation and photoacoustic spectroscopy measurements. The broad absorption and emission bands in the visible and near-infrared spectral regions presented by that system constitute the motivation for this study. More specifically, the luminescence occurs over a large interval of wavelengths, between 400 nm and 800 nm.
authors.affiliation: Instituto de Física, Universidade do Estado do Rio de Janeiro, Rua São Francisco Xavier 524, Rio de Janeiro, RJ, Brazil.
authors.forename: Sandra S
authors.initials: SS
authors.lastname: Pedro
authors.forename: Ossamu
authors.initials: O
authors.lastname: Nakamura
authors.forename: Ricardo B
authors.initials: RB
authors.lastname: Barthem
authors.forename: Lilian P
authors.initials: LP
authors.lastname: Sosman
mesh_terms: D000162:Acoustics; D005290:Ferric Compounds / Q000737:chemistry*; D005708:Gallium; D018020:Lithium Compounds; D049449:Luminescence; D010087:Oxides; D012825:Silicon; D013057:Spectrum Analysis
chemical_list: D005290:Ferric Compounds; D018020:Lithium Compounds; D010087:Oxides; C000499:ferric oxide; D005708:Gallium; D012825:Silicon