Author(s)

Chandkiram Gautam, Avadhesh Kumar Yadav, Vijay Kumar Mishra, Kunwar Vikram

Department of Physics University of Lucknow, Lucknow-226007, U. P. (India).
Department of Physics, Banaras Hindu University, Varanasi-221005, U. P. (India).

A series of glasses were prepared by rapid melt quench method in the glass system (65-x)[(Ba_0.6Sr_0.4)TiO₃]-30[2SiO₂-B₂O₃]-5[K₂O]-x[La₂O₃] (x = 0, 1, 2, 5 and 10). X-ray diffraction of glass samples were carried to check its amorphousity. Density of glass samples were measured using Archimedes principle. The refractive index of these glass samples lies between 2.39 to 2.80. Optical properties of these glass samples were studied using Infrared (IR) and Raman spectroscopic techniques. IR measurements were done over a continous spectral range 450 - 4000 cm^-1 to study their stucture networking systematically while Raman spectra were recorded over a continous spectral range 200 - 2000 cm^-1.IR spectra of all glass samples showed number of absorption peaks. These absorption peaks occurs due to asymetric vibrational streching of borate by relaxation of the bond B-O of trigonal BO₃. The Raman spectra of all glass samples exhibited different spectral bands and intensity of these bands changes drastically. The network structure of these glass samples is mainly based on BO₃ and BO₄ units placed in different structural groups.

Glasses; X-Ray Diffraction; Inferared Spectroscopy and Raman Spectroscopy

C. Gautam, A. Yadav, V. Mishra and K. Vikram, "Synthesis, IR and Raman Spectroscopic Studies of (Ba,Sr)TiO₃ Borosilicate Glasses with Addition of La₂O₃," Open Journal of Inorganic Non-metallic Materials, Vol. 2 No. 4, 2012, pp. 47-54. doi: 10.4236/ojinm.2012.24005.