Miao, Jun and Chew, Khian Hooi and Zhang, Lin Xing and Wu, Rui and Wang, Jia Ou and Shao, Fei and Zhan, Qian and Jiang, Yong (2019) Coexistence of dielectric relaxation and magnetic relaxation in compressively strained BiFeO3/Ba0.7Sr0.3TiO3 superlattices. Applied Physics Letters, 114 (11). p. 112902. ISSN 0003-6951, DOI https://doi.org/10.1063/1.5085350.
Full text not available from this repository.Abstract
Superlattices (SLs) consisting of multiferroic BiFeO3 (BFO) and dielectric Ba0.7Sr0.3TiO3 were epitaxially grown on a (001)-oriented Nb:SrTiO3 substrate using pulsed laser deposition. An improved ferroelectricity with a high-temperature polarization of ∼63.7 μC/cm2 at 470 K was observed. The SL exhibited both dielectric and magnetic relaxation properties. Two distinct dielectric relaxations were found: a carrier hopping process between Fe2+ and Fe3+ from 273 to 410 K and the long-range migration of oxygen vacancies from 430 to 573 K. Spin-glass behavior with a freezing temperature of ∼86.6 K was also observed. This work provides a promising path forward to tailor the multiferroic properties of BFO-based structures for high-temperature applications. © 2019 Author(s).
| Item Type: | Article |
|---|---|
| Funders: | UNSPECIFIED |
| Uncontrolled Keywords: | Bismuth compounds; Ferroelectricity; Bismuth ferrite |
| Subjects: | Q Science > Q Science (General) Q Science > QC Physics |
| Divisions: | Faculty of Science > Department of Physics |
| Depositing User: | Mr. Mohd Safri |
| Date Deposited: | 17 Mar 2020 02:07 |
| Last Modified: | 17 Mar 2020 02:48 |
| URI: | http://eprints.um.edu.my/id/eprint/16688 |
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