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Structural, magneto-optical and dielectric properties of phosphate tellurite glasses

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Abstract Phosphate tellurite glasses, with a nominal composition of 40%ZnO+40%P2O5+20%TeO2, have been synthesized by melt quenching procedure. P2O5 can lead to chemically stable phosphate tellurite glasses, compared with those classical… Click to show full abstract

Abstract Phosphate tellurite glasses, with a nominal composition of 40%ZnO+40%P2O5+20%TeO2, have been synthesized by melt quenching procedure. P2O5 can lead to chemically stable phosphate tellurite glasses, compared with those classical synthesized with H3PO4. Magneto-optical measurements have shown a derivative A1 term centered at 532 nm originating from a transition to a degenerated excited state associated with tellurium colloids. The glass densities, measured by the Archimedes method at room temperature, display an increasing value with the melting temperature of the samples. The electrical conductivity shifts toward lower frequencies with the increased melting temperature, being influenced by the mobile charges, which require lower thermal activation energy due to the Teo metallic particles. Together with dielectric constant, the electrical conductivity underlines structural changes, by increasing the melting temperature, associated with the presence of Teo nanoclusters.

Keywords: magneto optical; tellurite glasses; structural magneto; phosphate tellurite; melting temperature

Journal Title: Materials Research Bulletin
Year Published: 2021

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