DSC Studies of Some Bismuth-phosphate Glasses

• Authors: A. El-Adawy
• Languages of publication: EN

Abstracts

EN

The differential scanning calorimetry measurements were made on a series of bismuth-iron-phosphate glasses over a temperature range around the glass transition temperature. The activation energy for structural relaxation, ΔH, was determined and found to increase with the metal-to-phosphorus ratio. The differential scanning calorimetry data were analyzed using the Adam-Gibbs-Scherer model of the glass transition. This analysis suggests that these glasses undergo a transition from the strong to the fragile glass regime as the metal-to-phosphorus ratio is increased.

Keywords

EN

65.40.+g

• Journal: Acta Physica Polonica A
• Year: 1998
• Volume: 94
• Issue: 4
• Pages: 661-670

Dates

published

1998-10

received

1997-11-05

(unknown)

1998-05-25

Contributors

author

A. El-Adawy

• Physics Department, Faculty of Science, Menuofia University, Egypt

Identifiers

DOI

10.12693/APhysPolA.94.661