Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 140, Issue 1, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4855695
Keywords
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Funding
- NSF [DMR-08-53957]
- Franco-American Fulbright Commission
- International Materials Institute
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [0844014] Funding Source: National Science Foundation
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Here, we show that a new class of glasses composed of heavy metal oxides involving transition metals (V2O5-TeO2) 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-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 V2O5 content. Such observations have new implications for designing electronic glasses which differ from the traditional amorphous electrolytes having only mobile ions as charge carriers. (C) 2014 AIP Publishing LLC.
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