Correlations between structure and properties of materials. X. Anomalous optical properties and Raman spectra of glassy ternary B2O3–BaTiO3–Na2O materials

✍ Scribed by A. Bertoluzza; A. Marinangeli; M. A. Morelli; R. Simoni

• Book ID: 104580316
• Publisher: John Wiley and Sons
• Year: 1981
• Tongue: English
• Weight: 195 KB
• Volume: 19
• Category: Article
• ISSN: 0020-7608
• DOI: 10.1002/qua.560190627

✦ Synopsis

Abstract

The anomalous behavior of refractive index and density in the glassy ternary B~2~O~3~–BaTiO~3~–Na~2~O materials is presented and discussed in terms of Raman spectroscopy results. The slope change in the optical properties as a function of composition takes place within the same range of composition in which the Raman spectra suggest a transition from a bridging type of attack on the glassy matrix by the oxygen present in the basic oxide, to a nonbridging type. The structural modifications of the materials at different compositions are inferred from a detailed analysis of the Raman spectra.