@article{10902/35048,
year = {2017},
month = {8},
url = {https://hdl.handle.net/10902/35048},
abstract = {Alumino-tellurite glasses with wide range of Al2O3 concentration (1 to 20-mol%) are prepared and their short-range structural and thermal properties are studied by Raman spectroscopy, 27Al Magic Angle Spinning Nuclear Magnetic Resonance (MAS-NMR) and Differential Scanning Calorimetry (DSC). Glass sample with 1-mol% of Al2O3 has Te O co-ordination of 3.66, which is close to the value of 3.68 reported in pure TeO2 glass. Te O co-ordination decreases steadily to 3.33 on increasing alumina content to 20-mol%. 27Al MAS-NMR studies found that Al ions exist in hexa, penta and tetrahedral co-ordination in the alumino-tellurite network. On increasing alumina content from 3 to 20-mol%, the concentration of hexa-co-ordinated Al O units decreases from 54% to 35% with a simultaneous increase in the concentration of penta and tetra co-ordinated Al O units. Glass transition temperature increases with increase in Al2O3 concentration and correlates directly with the average single bond enthalpy of the glass network.},
organization = {Atul Khanna thanks IUAC New Delhi, UGC-DAE-CSR Mumbai and Indore Centers, India for research grants.},
publisher = {Elsevier},
publisher = {Journal of Non-Crystalline Solids, 2017, 470, 14-18},
title = {Short-range structure and thermal properties of alumino-tellurite glasses},
author = {Kaur, Amandeep and Khanna, Atul and González Barriuso, Marina and González Martínez, Fernando and Chen, Banghao},
}