Glass formation and optical band gap studies on Bi2O3-B2O3-BaO ternary system

Feifei Chen; Shixun Dai; Qiuhua Nie; Tiefeng Xu; Xiang Shen; Xunsi Wang

doi:10.1007/s11595-009-5716-y

Journal of Wuhan University of Technology Materials Science Edition ›› 2009, Vol. 24 ›› Issue (5) : 716 -720. DOI: 10.1007/s11595-009-5716-y

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Glass formation and optical band gap studies on Bi₂O₃-B₂O₃-BaO ternary system

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Abstract

The glass forming region of Bi₂O₃-B₂O₃-BaO ternary system was investigated. A serial of glass samples with high Bi₂O₃ content in Bi₂O₃-B₂O₃-BaO system were prepared by using conventional melting and quenching meld, and the refractive indexes and absorption spectra of samples were measured. It is found that the refractive index of samples as well as the UV absorption increase with the increase of BaO content. According to the Tauc law, optical band gap E _opg which is assumed to be the effective energy band gap E _g is calculated and decreases with the increasing BaO content, and the ratio of E _g/E _opg is 1.3.

Keywords

glass formation / bismuth glass / refractive index / optical band gap

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Feifei Chen, Shixun Dai, Qiuhua Nie, Tiefeng Xu, Xiang Shen, Xunsi Wang. Glass formation and optical band gap studies on Bi₂O₃-B₂O₃-BaO ternary system. Journal of Wuhan University of Technology Materials Science Edition, 2009, 24(5): 716-720 DOI:10.1007/s11595-009-5716-y

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