Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores
A complete substitutional solid solution, Bi3.08Cu1.84−xZnxTa3.08O14.16: 0 ≤ x ≤ 1.84, was prepared by solid-state reaction at temperature 950°C over 48 h. These thermally stable pyrochlores exhibited a remarkable transition from semiconducting to highly insulating behavior as their electrical condu...
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| Format: | Article |
| Language: | English |
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The American Ceramic Society
2016
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| Online Access: | http://psasir.upm.edu.my/id/eprint/53958/ http://psasir.upm.edu.my/id/eprint/53958/1/Synthesis%20and%20electrical%20properties%20.pdf |
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| author | Chon, Mun Ping Tan, Kar Ban Zainal, Zulkarnain Yap, Taufiq Yun Hin Tan, Phei Yi Khaw, Chwin Chieh Chen, Soo Kien |
| author_facet | Chon, Mun Ping Tan, Kar Ban Zainal, Zulkarnain Yap, Taufiq Yun Hin Tan, Phei Yi Khaw, Chwin Chieh Chen, Soo Kien |
| author_sort | Chon, Mun Ping |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | A complete substitutional solid solution, Bi3.08Cu1.84−xZnxTa3.08O14.16: 0 ≤ x ≤ 1.84, was prepared by solid-state reaction at temperature 950°C over 48 h. These thermally stable pyrochlores exhibited a remarkable transition from semiconducting to highly insulating behavior as their electrical conductivities varied by many orders of magnitude depending on the Zn concentration. The recorded activation energies increased from 0.40 to 1.40 eV, while the dielectric constants, ε′, and losses, tan δ, were in the range 50–70 and of order 10−3–10−2 at 1 MHz and ambient temperature, ~25°C, respectively. |
| first_indexed | 2025-11-15T10:37:50Z |
| format | Article |
| id | upm-53958 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T10:37:50Z |
| publishDate | 2016 |
| publisher | The American Ceramic Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-539582018-02-22T07:03:11Z http://psasir.upm.edu.my/id/eprint/53958/ Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores Chon, Mun Ping Tan, Kar Ban Zainal, Zulkarnain Yap, Taufiq Yun Hin Tan, Phei Yi Khaw, Chwin Chieh Chen, Soo Kien A complete substitutional solid solution, Bi3.08Cu1.84−xZnxTa3.08O14.16: 0 ≤ x ≤ 1.84, was prepared by solid-state reaction at temperature 950°C over 48 h. These thermally stable pyrochlores exhibited a remarkable transition from semiconducting to highly insulating behavior as their electrical conductivities varied by many orders of magnitude depending on the Zn concentration. The recorded activation energies increased from 0.40 to 1.40 eV, while the dielectric constants, ε′, and losses, tan δ, were in the range 50–70 and of order 10−3–10−2 at 1 MHz and ambient temperature, ~25°C, respectively. The American Ceramic Society 2016 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/53958/1/Synthesis%20and%20electrical%20properties%20.pdf Chon, Mun Ping and Tan, Kar Ban and Zainal, Zulkarnain and Yap, Taufiq Yun Hin and Tan, Phei Yi and Khaw, Chwin Chieh and Chen, Soo Kien (2016) Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores. International Journal of Applied Ceramic Technology, 13 (4). pp. 718-725. ISSN 1546-542X; ESSN: 1744-7402 http://onlinelibrary.wiley.com/doi/10.1111/ijac.12547/abstract Impedance; Electroceramics; Solubility; Tantalum/tantalum compounds 10.1111/ijac.12547 |
| spellingShingle | Impedance; Electroceramics; Solubility; Tantalum/tantalum compounds Chon, Mun Ping Tan, Kar Ban Zainal, Zulkarnain Yap, Taufiq Yun Hin Tan, Phei Yi Khaw, Chwin Chieh Chen, Soo Kien Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores |
| title | Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores |
| title_full | Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores |
| title_fullStr | Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores |
| title_full_unstemmed | Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores |
| title_short | Synthesis and electrical properties of Zn-substituted bismuth copper tantalate pyrochlores |
| title_sort | synthesis and electrical properties of zn-substituted bismuth copper tantalate pyrochlores |
| topic | Impedance; Electroceramics; Solubility; Tantalum/tantalum compounds |
| url | http://psasir.upm.edu.my/id/eprint/53958/ http://psasir.upm.edu.my/id/eprint/53958/ http://psasir.upm.edu.my/id/eprint/53958/ http://psasir.upm.edu.my/id/eprint/53958/1/Synthesis%20and%20electrical%20properties%20.pdf |