Bibliographic Details
| Title: |
Structure of Glassy and Metastable Crystalline BaTi2O5 Fabricated Using Containerless Processing. |
| Authors: |
Yu, Jianding1, Yoda, Shinich1, Masuno, Atsunobu2, Natsui, Hidesada3, Kaneko, Masashi3 |
| Source: |
Ferroelectrics. 2010, Vol. 402 Issue 1, p130-136. 7p. |
| Subjects: |
Containerless processing, Crystallography, Synchrotron radiation, Refractive index, Barium compounds, Neutrons, Silicates, Glass |
| Abstract: |
We succeeded in synthesizing a bulk BaTi2O5 glass whose refractive index is extremely higher than conventional silicate glasses. Advanced synchrotron radiation, neutron measurements, XANES analyses and computer simulations revealed the formation of unusual TiO5 network with very random dense packed distribution of oxygen around the barium in BaTi2O5 glass. The 3-dimensional atomic structure of glassy BaTi2O5 (g-BaTi2O5), simulated by Reverse Monte Carlo (RMC) modelling on diffraction data, shows that extremely distorted TiO5 polyhedra interconnected with both corner- and edge-shared oxygen, formed a higher packing density structure than that of conventional silicate glass. We are sure that such an unusual structure is the origin of excellent optical properties. [ABSTRACT FROM AUTHOR] |
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| Database: |
Engineering Source |
