【摘 要】
：
Theglass representing 60Bi2O3-20B2O3-(40-x)TiO2(x=0,5,10,15 and 20mo1%)were prepared by normal melt quenching technique.The optical and structural features have been investigated by DSC,UV-Vis absorpt
【机 构】
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School of Materials Science and Engineering,Shanghai Institute of Technology,Shanghai 201418,PR Chin
【出 处】
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第八届中国功能玻璃学术研讨会暨新型光电子材料国际论坛
论文部分内容阅读
Theglass representing 60Bi2O3-20B2O3-(40-x)TiO2(x=0,5,10,15 and 20mo1%)were prepared by normal melt quenching technique.The optical and structural features have been investigated by DSC,UV-Vis absorption,Raman,XPS spectroscopy.Variations Tg,Tx-Tg,refractive index,optical absorption cutting have been correlated with the structural transformation with the TiO2 content in glass sample.Owning to the higherpolarizability of Ti4+,the refractive index exhibits the gradualincreasement by TiO2 addition.The glass transition temperature Tgshows an increasing trend after the first decrease,whereas,the thermal stable parameter Tx-Tg shows the oppose tendency.Raman measurements reveal that,with the TiO2 content,the structural unit[BO3] trigonal pyramidsare transformed to [BO4] tetrahedrons.The origin of bridging oxygen(BO)and non-bridging oxygen(NBO)from XPS measurement have been traced to correlatewith the discussion of thermal and structural properties of the as-made glass.
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