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The local structure of gadolinium vanadate–tellurate glasses and glass ceramics: Te2V2O9 crystalline phase

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Abstract

Glasses in the system xGd2O3 · (100 − x)[0.7TeO2 · 0.3V2O5] with 0 ≤ x ≤20 mol% have been prepared from melt quenching method. Influence of gadolinium ions on structural behavior in vanadate–tellurate glasses has been investigated using FTIR spectroscopy, X-ray diffraction (XRD), and magnetic susceptibility measurements. The structural changes have been analyzed with increasing rare earth concentration. The structural changes, as recognized by analyzing band shapes of XRD and FTIR spectra, revealed that Gd2O3 causes a higher extent of network polymerization as far as 20 mol%. The structure of the heat-treated glasses was found to consist mainly of the Te2V2O9 crystalline phase. These vitreous systems were investigated by magnetic susceptibility measurements. From the paramagnetic susceptibility χ was calculated at different temperature and from the 1/χ(T) graph, the Curie temperature of the glass has been evaluated. Magnetic susceptibility data show the presence of small antiferromagnetic interactions between the Gd+3 ions.

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Authors and Affiliations

  1. Technical University of Cluj-Napoca, 400641, Cluj-Napoca, Romania

    Simona Rada, Maria Bosca, Eugen Culea, Marius Rada, Viorel Dan & Vistrian Maties

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  1. Simona Rada
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  2. Maria Bosca
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  3. Eugen Culea
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  4. Marius Rada
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  6. Vistrian Maties
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Correspondence to Simona Rada.

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Rada, S., Bosca, M., Culea, E. et al. The local structure of gadolinium vanadate–tellurate glasses and glass ceramics: Te2V2O9 crystalline phase. Struct Chem 20, 801–805 (2009). https://doi.org/10.1007/s11224-009-9470-8

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