Structure of Na2O·2TiO2 glass |
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Authors: | F Miyaji T Yoko H Kozuka S Sakka |
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Affiliation: | (1) Institute for Chemical Research, Kyoto University, Uji, 611 Kyoto-fu, Japan |
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Abstract: | X-ray radial distribution analysis and Raman spectroscopic measurement were carried out on Na2O-2TiO2 glass prepared by twin-roller quenching method. It is found that four-coordinated Ti4+ ions may be predominant over six-coordinated ones in the present glass. It is also found that the fraction of six-coordinated Ti4+ ions is larger in the present glass than in K2O·2TiO2 and Cs2O·2TiO2 glasses. Poorer glass-forming ability of the Na2O-TiO2 system compared with the K2O-TiO2 and Cs2O-TiO2 systems is ascribed to a larger fraction of TiO6 octahedron for the former system. |
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