Journal
RESULTS IN PHYSICS
Volume 16, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.rinp.2019.102914
Keywords
SrTiO3 borosilicate glasses; IR spectroscopy; Raman spectroscopy; UV-Vis spectroscopy; NMR spectroscopy
Funding
- Council of Scientific and Industrial Research, CSIR Complex, Pusa, New Delhi (India) [09/107(0380)/2016-EMR-I, 124250/2K15/1]
- Science and Engineering Research Board, Department of Science and Technology (SERB-DST) New Delhi, Government of India [EEO/2018/000647]
- Science and Engineering Research Board (SERB), Department of Science and Technology (DST), Government of India [EMR/2016/000249]
- UGC-BSR, Government of India [30-12/2014 BSR]
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Various glass compositions were synthesized in the glassy compound (60-x)[SrTiO3]-39[2SiO(2)B(2)O(3)]-(1 + x)TeO2, (x = 0, 2, 4, 6 and 8) by rapid melt-quenching method. X-ray diffraction (XRD) results show amorphous characteristics of the prepared glasses. Structural, optical and solid-state nuclear magnetic resonance (NMR) characterizations were carried out using different spectroscopic techniques. The calculated optical band gap values were obtained in the range of 3.31 eV-3.48 eV. The Urbach energy, E-U and skin depth, delta were calculated; E-U was found to be increased from 0.284 to 0.296 eV with increasing doping concentration of TeO2. B-11-MAS-NMR and Si-29-MAS-NMR measurements recommend the formation of non-bridging oxygen within glassy network.
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