Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore
The electrical properties of bismuth magnesium tantalate pyrochlore, Bi3.30Mg1.88Ta2.82O13.88 (BMT) were investigated by both inductor-capacitor-resistor (LCR) and impedance spectroscopy techniques covering a broad temperature range of 10–1073 K and a frequency range of 5 Hz - 1 MHz. At below ∼180 K...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024
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| Online Access: | http://psasir.upm.edu.my/id/eprint/112782/ http://psasir.upm.edu.my/id/eprint/112782/1/112782.pdf |
| _version_ | 1848866035923419136 |
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| author | Tan, P.Y. Tan, K.B. Khaw, C.C. Murthy, H.C. Ananda Balachandran, R. Chen, S.K. Lee, O.J. Chan, K.Y. Lu, M. |
| author_facet | Tan, P.Y. Tan, K.B. Khaw, C.C. Murthy, H.C. Ananda Balachandran, R. Chen, S.K. Lee, O.J. Chan, K.Y. Lu, M. |
| author_sort | Tan, P.Y. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | The electrical properties of bismuth magnesium tantalate pyrochlore, Bi3.30Mg1.88Ta2.82O13.88 (BMT) were investigated by both inductor-capacitor-resistor (LCR) and impedance spectroscopy techniques covering a broad temperature range of 10–1073 K and a frequency range of 5 Hz - 1 MHz. At below ∼180 K, BMT pyrochlore exhibited interesting relaxor behaviour that showed high dispersion characteristics in its frequency-temperature dependent dielectric constants, ε′ and dielectric losses, tan δ, respectively. The maximum ε′max of ∼77 was obtained at the temperature maximum, Tm of 154 K. The frequency-independent ε′ data above 154 K at a fixed frequency of 1 MHz can be well fitted with the Curie-Weiss law and the relaxation features of Bi3.30Mg1.88Ta2.82O13.88 obeyed the Vogel-Fulcher equation. The dielectric properties of Bi3.30Mg1.88Ta2.82O13.88 relaxor in the low temperature range of 20–320 K could be satisfactorily modeled with different equivalent circuits. In this perspective, a master circuit consisting of a parallel R-C-CPE element in series with a capacitor was required to accurately fit the low temperature data. |
| first_indexed | 2025-11-15T14:14:12Z |
| format | Article |
| id | upm-112782 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T14:14:12Z |
| publishDate | 2024 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-1127822024-11-11T08:56:04Z http://psasir.upm.edu.my/id/eprint/112782/ Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore Tan, P.Y. Tan, K.B. Khaw, C.C. Murthy, H.C. Ananda Balachandran, R. Chen, S.K. Lee, O.J. Chan, K.Y. Lu, M. The electrical properties of bismuth magnesium tantalate pyrochlore, Bi3.30Mg1.88Ta2.82O13.88 (BMT) were investigated by both inductor-capacitor-resistor (LCR) and impedance spectroscopy techniques covering a broad temperature range of 10–1073 K and a frequency range of 5 Hz - 1 MHz. At below ∼180 K, BMT pyrochlore exhibited interesting relaxor behaviour that showed high dispersion characteristics in its frequency-temperature dependent dielectric constants, ε′ and dielectric losses, tan δ, respectively. The maximum ε′max of ∼77 was obtained at the temperature maximum, Tm of 154 K. The frequency-independent ε′ data above 154 K at a fixed frequency of 1 MHz can be well fitted with the Curie-Weiss law and the relaxation features of Bi3.30Mg1.88Ta2.82O13.88 obeyed the Vogel-Fulcher equation. The dielectric properties of Bi3.30Mg1.88Ta2.82O13.88 relaxor in the low temperature range of 20–320 K could be satisfactorily modeled with different equivalent circuits. In this perspective, a master circuit consisting of a parallel R-C-CPE element in series with a capacitor was required to accurately fit the low temperature data. Elsevier 2024 Article PeerReviewed text en cc_by_nc_nd_4 http://psasir.upm.edu.my/id/eprint/112782/1/112782.pdf Tan, P.Y. and Tan, K.B. and Khaw, C.C. and Murthy, H.C. Ananda and Balachandran, R. and Chen, S.K. and Lee, O.J. and Chan, K.Y. and Lu, M. (2024) Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore. Journal of Science: Advanced Materials and Devices, 9 (2). art. no. 100715. pp. 1-9. ISSN 2468-2284; eISSN: 2468-2179 https://www.sciencedirect.com/science/article/pii/S2468217924000467?via%3Dihub 10.1016/j.jsamd.2024.100715 |
| spellingShingle | Tan, P.Y. Tan, K.B. Khaw, C.C. Murthy, H.C. Ananda Balachandran, R. Chen, S.K. Lee, O.J. Chan, K.Y. Lu, M. Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore |
| title | Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore |
| title_full | Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore |
| title_fullStr | Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore |
| title_full_unstemmed | Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore |
| title_short | Electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore |
| title_sort | electrical circuit modeling for the relaxor response of bismuth magnesium tantalate pyrochlore |
| url | http://psasir.upm.edu.my/id/eprint/112782/ http://psasir.upm.edu.my/id/eprint/112782/ http://psasir.upm.edu.my/id/eprint/112782/ http://psasir.upm.edu.my/id/eprint/112782/1/112782.pdf |