In this research paper we are reporting synthesis, structural and optical
investigations of barium strontium titanate borosilicate
glasses with addition of La2O3.Glasses were
synthesized by conventional rapid melt quench method. Infrared absorption
spectra, for various (Ba,Sr)TiO3 borosilicate glass samples having
glass system 64[(Ba1-xSrx)TiO3]-35[2SiO2-B2O3]-5[K2O]-1[La2O3]
(x=0.3, 0.5, 0.6, 0.8 and 1.0), were recorded over a
continous spectral range from 450 - 4000
cm-1.IR spectra were analyzed to determine and differentiate the various
vibrational modes in the structural changes. Raman
spectroscopy of all glass samples were also carried out wavenumber range form 200-1500 cm-1. These two
complementary spectroscopic techniques revealed that the network structure of
the studied glasses is mainly based on BO3, pentaborate
groups linked to BO4 tetrahedra and units placed in different structural groups,
the BO3 units are
dominanting. The recorded IR and Raman spectra of different glasses are used to
clarify the optical properties of the prepared glass samples correlating with
their structure and compositions. UV-Vis spectroscopy
was carried out in range of
200-800 nm. The optical band gap was found between 2.023-3.320 eV.
Cite this paper
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