UPM Institutional Repository

Electrical conductivity and dielectric constant of samarium phosphate glasses


Citation

Ab. Aziz, Sidek and Collier, I. T. and Hampton, R. N. and Saunders, G. A. (1989) Electrical conductivity and dielectric constant of samarium phosphate glasses. Philosophical Magazine B, 59 (2). pp. 221-232. ISSN 1364-2812

Abstract

The first measurements of the d.c. electrical conductivity and the low-frequency (static) dielectric constant of samarium phosphate glasses (in the composition range 5 to 25 mol% Sm2O3) are reported. A break in the slope of the Arrhenius plot divides the conductivity data into two temperature regimes, the conductivity mechanism at low temperatures having a lower activation energy than that at higher temperatures. An increase of Sm2O3 glass modifier content results in a decrease in the absolute value of the conductivity. The data are consistent with small-polaron transport and hence small-polaron theory has been used to establish the characteristic energies of the carriers. The dielectric constants range from 5.4 for a glass containing 5mol% Sm2O3 to 8·1 for that with 2Smol% Sm2O3; the temperature dependences of the dielectric constants are linear and positive, as is usual for glasses.


Download File

[img] PDF
Electrical conductivity and dielectric constant of samarium phosphate glasses.pdf
Restricted to Repository staff only

Download (573kB)

Additional Metadata

Item Type: Article
Divisions: Universiti Pertanian Malaysia
Faculty of Science
Publisher: Taylor & Francis
Keywords: Electrical conductivity; Dielectric constant; Samarium phosphate glasses
Depositing User: Mohd Hafiz Che Mahasan
Date Deposited: 10 Aug 2015 06:15
Last Modified: 10 Aug 2015 06:15
URI: http://psasir.upm.edu.my/id/eprint/39563
Statistic Details: View Download Statistic

Actions (login required)

View Item View Item