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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| Format: | Article |
| Language: | English English |
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Wiley-Blackwell
2011
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| Online Access: | http://psasir.upm.edu.my/id/eprint/24846/ http://psasir.upm.edu.my/id/eprint/24846/1/Characteristics%20of%20alternating%20current%20conductivity%20in%20ternary%20zinc%20calcium%20phosphate%20glasses.pdf |
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| 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 |
| 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 |
| building | UPM Institutional Repository |
| collection | Online Access |
| 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. |
| first_indexed | 2025-11-15T08:42:12Z |
| format | Article |
| id | upm-24846 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T08:42:12Z |
| publishDate | 2011 |
| publisher | Wiley-Blackwell |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-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 |
| 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. |
| title | 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_short | Characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses. |
| title_sort | characteristics of alternating current conductivity in ternary zinc calcium phosphate glasses. |
| url | http://psasir.upm.edu.my/id/eprint/24846/ http://psasir.upm.edu.my/id/eprint/24846/ http://psasir.upm.edu.my/id/eprint/24846/ http://psasir.upm.edu.my/id/eprint/24846/1/Characteristics%20of%20alternating%20current%20conductivity%20in%20ternary%20zinc%20calcium%20phosphate%20glasses.pdf |