Crystallization process and electrical conductivity in vanadium borophosphate glass containing iron

I. Kashif, H. Farouk, S. A. Aly, A. A. Abdel-Rahman, A. M. Sanad, Essam Assem

Research output: Contribution to journalJournal articlepeer-review

10 Scopus citations

Abstract

Glasses were synthesized in the V2O5-P2O5-B2O 3 system containing X mol.% Fe2O3 (X = 0, 0.5, 1, 2.5, 5 and 7.5). The prepared glasses were heat treated at 300°C or 0.5, 1, 6, 12 and 24 h. The density and molar volume values for these glass samples were measured and calculated. The molar volume was found to decrease in the samples heat treated for a time exceeding 1 h, indicating the increase in the crystallinity of the samples during the heat treatment. The rate and the geometry of the crystallization due to the heat treatment were calculated by applying the Avrami equation. The electrical conductivity was measured for the untreated and heat-tamples in the temperature range 30-250°C.The conductivity results are discussed in relation to the hopping of iron and vanadate ions in different valence states and as a result of the increase in crystallinity of the samples during the heat treatment.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume10
Issue number1
DOIs
StatePublished - 30 Sep 1991
Externally publishedYes

Fingerprint

Dive into the research topics of 'Crystallization process and electrical conductivity in vanadium borophosphate glass containing iron'. Together they form a unique fingerprint.

Cite this