Li, X., Tao, C., Nie, S., Ren, X., Xu, H., Luo, H., Lam, K. H. , Jiang, X. and Guo, Z. (2022) Investigation of the dielectric relaxation mechanisms for Pb(Fe1/2Nb1/2)O3 single crystal based on the universal relaxation law. Physica B: Condensed Matter, 624, 413394. (doi: 10.1016/j.physb.2021.413394)
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Abstract
Large-sized multiferroics Pb(Fe1/2Nb1/2)O3 (PFN) single crystal was grown by Bridgeman method in order to understand the giant dielectric response by investigating the electrical conductivity and dielectric properties. The synchrotron radiation soft x-ray absorption spectrum revealed the valence states of Fe in PFN crystal. PFN exhibits semiconductor behaviors in the thermal active electrical conductivity investigation. Besides, the frequency-dependent dielectric constants were measured in the frequency range from 100 Hz to 1 MHz to study the dielectric relaxation behaviors. Two relaxation processes were found and described by Havriliak-Negami equation. The origin of dielectric relaxation in PFN with semiconductor characters was discussed based on the universal relaxation law for a dipolar system.
| Item Type: | Articles |
|---|---|
| Additional Information: | This work was financially supported by the Shanghai Municipal Natural Science Foundation (No. 19ZR1436200 & 19440760800) and the Scientific and Technological Plan of Guangdong Province (2017A050506036). |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Lam, Dr Koko |
| Authors: | Li, X., Tao, C., Nie, S., Ren, X., Xu, H., Luo, H., Lam, K. H., Jiang, X., and Guo, Z. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Physica B: Condensed Matter |
| Publisher: | Elsevier |
| ISSN: | 0921-4526 |
| ISSN (Online): | 1873-2135 |
| Published Online: | 06 September 2021 |
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