Designing heavy metal oxide glasses with threshold properties from network rigidity
- School of Electronics and Computing Systems, College of Engineering and Applied Science, University of Cincinnati, Cincinnati, Ohio 45221-0030 (United States)
- CEMHTI, CNRS UPR 3079, 1D, Avenue de la Recherche Scientifique, 45071 Orleáns Cedex 02 (France)
- Laboratoire de Physique Théorique de la Matière Condensée, Université Pierre et Marie Curie, 4 Place Jussieu, F-75252 Paris Cedex 05 (France)
Here, we show that a new class of glasses composed of heavy metal oxides involving transition metals (V{sub 2}O{sub 5}–TeO{sub 2}) can surprisingly be designed from very basic tools using topology and rigidity of their underlying molecular networks. When investigated as a function of composition, such glasses display abrupt changes in network packing and enthalpy of relaxation at T{sub g}, underscoring presence of flexible to rigid elastic phase transitions. We find that these elastic phases are fully consistent with polaronic nature of electronic conductivity at high V{sub 2}O{sub 5} content. Such observations have new implications for designing electronic glasses which differ from the traditional amorphous electrolytes having only mobile ions as charge carriers.
- OSTI ID:
- 22253669
- Journal Information:
- Journal of Chemical Physics, Vol. 140, Issue 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
- Country of Publication:
- United States
- Language:
- English
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