Synthesis, IR and Raman Spectroscopic Studies of (Ba,Sr)TiO sub(3) Borosilicate Glasses with Addition of La sub(2)O sub(3)

• Published in: Open Journal of Inorganic Non-metallic Materials (Irvine CA) Vol. 2; no. 4; pp. 47 - 54
• Main Authors: Gautam, Chandkiram, Yadav, Avadhesh Kumar, Mishra, Vijay Kumar, Vikram, Kunwar
• Format: Journal Article
• Language: English
• Published: 01.10.2012
• Subjects: Borosilicate glasses; Density; Glass; Infrared radiation; Infrared spectroscopy; Raman spectra; Spectra; Spectroscopic analysis; Spectroscopy
• ISSN: 2164-6791; 2164-6805
• DOI: 10.4236/ojinm.2012.24005

A series of glasses were prepared by rapid melt quench method in the glass system (65-x)[(Ba sub(0.6)Sr sub(0.4))Ti O sub(3)]-30[2SiO sub(2)-B sub(2)O sub(3)]-5[K sub(2)O]-x[La sub(2)O sub(3)] (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 super(-1) to study their stucture networking systematically while Raman spectra were recorded over a continous spectral range 200 - 2000 cm super(-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 BO sub(3). 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 BO sub(3) and BO sub(4) units placed in different structural groups.