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Type: Artigo de periódico
Title: Preparation And Characterization Of Heavy-metal Oxide Glasses: Bi 2o3-pbo-b2o3-geo2 System
Author: Solano Reynoso V.C.
Barbosa L.C.
Alves O.L.
Aranha N.
Cesar C.L.
Abstract: High-refractive-index glasses of heavy-metal oxides have large optical non-linearities which make them promising for optoelectronic applications. This paper describes the fabrication and characterization of the xBi 2O3-PbO-B2O3-(52-X)GeO2 (BPBG) glass system with x = 10, 15, 20, 30 and 35. The BPBG glasses were melted in a high-purity alumina crucible placed in a Super Khantal resistance furnace at 1000 °C for 30 min and then poured onto a steel plate. The characterization was done by X-ray diffraction (XRD), density, dilatometry, light absorption (UV-VIS-IR) and linear refractive-index measurements. The infrared spectra show the presence of BiO6 and GeO6 in the glass structure suggesting a network former role for the bismuth oxide. These measurements allowed us to estimate the non-linear refractive index n 2, using Line's formula, to be as high as 1.5 × 10 -18 m2 W-1.
Rights: aberto
Identifier DOI: 
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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