A new transition metal-tellurite glass family: Electrical and structural properties

S. TERNY; M. A. DE LA RUBIA; J. DE FRUTOS; MARISA A. FRECHERO

JOURNAL OF NON-CRYSTALLINE SOLIDS

ELSEVIER SCIENCE BV

Lugar: Amsterdam; Año: 2016 vol. 433 p. 68 - 74

0022-3093

Glasses of composition 0.8 [xBaO.(1−x)MgO]. 0.2TM.2TeO2 with TM:MoO3, WO3, V2O5 or Nb2O5 (x=mol content)were obtained by the melt quenching technique. Raman Spectroscopy, Density and Differential ScanningCalorimetry were used to infer their microscopic structure and electrical properties were studied using ImpedanceSpectroscopy. Some singularities in their electrical and structural properties appeared. Deviations from linearityas a function of alkaline-earth oxide modifier content were observed both on the electrical and structuralproperties. They were analyzed considering the intensity of the electrical field of the mix of alkaline earth cationswhich induced changes on the glassy matrix and the mixed alkaline-earth effect was considered. The observedrelationships between their electrical and structural properties and the mix of alkaline earth cations were differentaccording to the transition metal oxide present