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Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses.

Binary (CaO)x(P2O5)1−x glasses with mole fraction x=0.05–0.4 with an interval of 0.05 and ternary (ZnO)x(CaO)0.3−x(P2O5)0.7 glasses with mole fraction x=0.01–0.09 with an interval of 0.02 were synthesized by the melt quenching technique over a wide composition range. The electrical properties of the...

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Main Authors: Talib, Zainal Abidin, Wan Yusoff, Wan Mohamad Daud, Khor, Shing Fhan, M. Tarmizi, Emma Z., Abd. Aziz, Sidek, Mat Yunus, Wan Mahmood, Shaari, Abdul Halim
Format: Article
Language:English
English
Published: Wiley-Blackwell 2011
Online Access:http://psasir.upm.edu.my/id/eprint/24846/1/Characteristics%20of%20alternating%20current%20conductivity%20in%20ternary%20zinc%20calcium%20phosphate%20glasses.pdf
http://psasir.upm.edu.my/id/eprint/24846/
http://as.wiley.com/
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spelling my.upm.eprints.248462016-01-12T03:00:52Z http://psasir.upm.edu.my/id/eprint/24846/ Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses. Talib, Zainal Abidin Wan Yusoff, Wan Mohamad Daud Khor, Shing Fhan M. Tarmizi, Emma Z. Abd. Aziz, Sidek Mat Yunus, Wan Mahmood Shaari, Abdul Halim Binary (CaO)x(P2O5)1−x glasses with mole fraction x=0.05–0.4 with an interval of 0.05 and ternary (ZnO)x(CaO)0.3−x(P2O5)0.7 glasses with mole fraction x=0.01–0.09 with an interval of 0.02 were synthesized by the melt quenching technique over a wide composition range. The electrical properties of these glasses were investigated by ac impedance spectroscopy from 10 to 1 MHz for temperatures ranging from room temperature to 300°C. The conductivity of both samples shows dispersive behavior at lower temperatures, while at higher temperatures the conductivity is almost constant at the lower end of the frequency, approaching the dc conductivity limit and rises rapidly as the frequency is increased. We also observed that the onset of the dispersion shifted to higher frequencies with the increase in temperature. The dc conductivity (σdc) was found to increase with higher temperatures. The activation energy for electrical conduction, Eσ and activation energy for electrical relaxation, Eτ for (ZnO)x (CaO)0.3−x (P2O5)0.7 were found to be slightly higher than (CaO)x (P2O5)1−x. Observations of the dielectric strength, Δɛ, of (ZnO)x (CaO)0.3−x (P2O5)0.7 glasses showed that Δɛ increased with the increase of ZnO. Wiley-Blackwell 2011 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/24846/1/Characteristics%20of%20alternating%20current%20conductivity%20in%20ternary%20zinc%20calcium%20phosphate%20glasses.pdf Talib, Zainal Abidin and Wan Yusoff, Wan Mohamad Daud and Khor, Shing Fhan and M. Tarmizi, Emma Z. and Abd. Aziz, Sidek and Mat Yunus, Wan Mahmood and Shaari, Abdul Halim (2011) Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses. Journal of the American Ceramic Society , 94 (4). pp. 1156-1161. ISSN 0002-7820; ESSN:1551-2916 http://as.wiley.com/ 10.1111/j.1551-2916.2010.04206.x English
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
English
description Binary (CaO)x(P2O5)1−x glasses with mole fraction x=0.05–0.4 with an interval of 0.05 and ternary (ZnO)x(CaO)0.3−x(P2O5)0.7 glasses with mole fraction x=0.01–0.09 with an interval of 0.02 were synthesized by the melt quenching technique over a wide composition range. The electrical properties of these glasses were investigated by ac impedance spectroscopy from 10 to 1 MHz for temperatures ranging from room temperature to 300°C. The conductivity of both samples shows dispersive behavior at lower temperatures, while at higher temperatures the conductivity is almost constant at the lower end of the frequency, approaching the dc conductivity limit and rises rapidly as the frequency is increased. We also observed that the onset of the dispersion shifted to higher frequencies with the increase in temperature. The dc conductivity (σdc) was found to increase with higher temperatures. The activation energy for electrical conduction, Eσ and activation energy for electrical relaxation, Eτ for (ZnO)x (CaO)0.3−x (P2O5)0.7 were found to be slightly higher than (CaO)x (P2O5)1−x. Observations of the dielectric strength, Δɛ, of (ZnO)x (CaO)0.3−x (P2O5)0.7 glasses showed that Δɛ increased with the increase of ZnO.
format Article
author Talib, Zainal Abidin
Wan Yusoff, Wan Mohamad Daud
Khor, Shing Fhan
M. Tarmizi, Emma Z.
Abd. Aziz, Sidek
Mat Yunus, Wan Mahmood
Shaari, Abdul Halim
spellingShingle Talib, Zainal Abidin
Wan Yusoff, Wan Mohamad Daud
Khor, Shing Fhan
M. Tarmizi, Emma Z.
Abd. Aziz, Sidek
Mat Yunus, Wan Mahmood
Shaari, Abdul Halim
Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses.
author_facet Talib, Zainal Abidin
Wan Yusoff, Wan Mohamad Daud
Khor, Shing Fhan
M. Tarmizi, Emma Z.
Abd. Aziz, Sidek
Mat Yunus, Wan Mahmood
Shaari, Abdul Halim
author_sort Talib, Zainal Abidin
title Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses.
title_short Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses.
title_full Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses.
title_fullStr Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses.
title_full_unstemmed Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses.
title_sort characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses.
publisher Wiley-Blackwell
publishDate 2011
url http://psasir.upm.edu.my/id/eprint/24846/1/Characteristics%20of%20alternating%20current%20conductivity%20in%20ternary%20zinc%20calcium%20phosphate%20glasses.pdf
http://psasir.upm.edu.my/id/eprint/24846/
http://as.wiley.com/
_version_ 1643828482724069376
score 13.211869

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