Journal of Materials Science

, Volume 43, Issue 15, pp 5131–5138 | Cite as

Thermal properties of multicomponent tellurite glass



Quaternary tellurite glass systems of the form 80TeO2–5TiO2–(15 − x)WO3 − xAnOm where AnOm is Nb2O5, Nd2O3, and Er2O3, x = 0.01, 1, 3, and 5 mol% for Nb2O5 and x = 0.01, 0.1, 1, 3, 5, and 7 mol% for Nd2O3 and Er2O3, have been prepared by the melt quenching. Density and molar volumes have been measured and calculated for every glass system. The thermal behavior of the glass series was studied by using the differential thermal analysis DSC. Glass transition temperature T g, crystallization temperature T c, and the onset of crystallization temperature T x were determined. The glass stability against crystallization S (≈100 °C) and glass-forming tendency K g (≈0.3) have been calculated. Specific heat capacity C p (≥1.4 J/g °C) was measured from room temperature and above the T g for every composition in each glass series. Quantitative analysis of the above thermal properties of these new tellurite glass with the structure parameters like average cross-link density \( \ifmmode\expandafter\bar\else\expandafter\=\fi{n}_{{\text{c}}} \) (≥2.4), number of bonds per unit volume n b (≥8 × 1028 cm−3), and the average stretching force constant (F) have been studied for every glass composition.


Glass Transition Temperature Molar Volume Nb2O5 Specific Heat Capacity TeO2 


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© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Physics Department, Faculty of ScienceMenofia UniversityMenofiaEgypt
  2. 2.Supreme Education CouncilDohaQatar

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