Role of Bi2O3 content on physical, optical and vibrational studies in Bi2O3-ZnO-B2O3 glasses

• Published in: Journal of alloys and compounds 2008-07, Vol.460 (1-2), p.699-703
• Main Authors: BALE, Shashidhar, RAHMAN, Syed, AWASTHI, A. M, SATHE, V
• Format: Article
• Language: English
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Equations of state, phase equilibria, and phase transitions; Exact sciences and technology; Glass transitions; Lattice dynamics; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of bulk materials and thin films; Physics; Specific phase transitions; Vibrational states in disordered systems
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2007.06.090

Glasses with composition (85 - x)Bi2O3-xZnO-15B2O3 with 15 < = x < = 40 have been prepared by conventional melt quench technique. Systematic variation in density and molar volume in these glasses indicates the effect of Bi2O3 on the glass structure. The parameters glass transition temperature (Tg), change in the transition temperature (DeltaTg) and specific heat capacity difference (DeltaCp) in the glass transition range were measured. The values of optical band gap and theoretical optical basicity are also reported. Raman and infrared studies have been employed on these glasses in order to obtain information regarding the competitive role of Bi2O3 in the formation of glass network.