Dielectric relaxations and dielectric response in multiferroic BiFeO3 ceramics
Single-phase multiferroic BiFeO3 ceramics were fabricated using pure precipitation-prepared BiFeO3 powder. Dielectric response of BiFeO3 ceramics was investigated over a wide range of temperature and frequency. Our results reveal that the BiFeO3 ceramic sintered at 700 °C exhibited high dielectric p...
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| Main Authors: | , , , , |
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| Format: | Journal |
| Published: |
2018
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| Subjects: | |
| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=60349095912&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/59953 |
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| Institution: | Chiang Mai University |
| Summary: | Single-phase multiferroic BiFeO3 ceramics were fabricated using pure precipitation-prepared BiFeO3 powder. Dielectric response of BiFeO3 ceramics was investigated over a wide range of temperature and frequency. Our results reveal that the BiFeO3 ceramic sintered at 700 °C exhibited high dielectric permittivity, and three dielectric relaxations were observed. A Debye-type dielectric relaxation at low temperatures (-50 to 20 °C) is attributed to the carrier hopping process between Fe2+and Fe3+. The other two dielectric relaxations at the temperature ranges 30-130 °C and 140-200 °C could be due to the grain boundary effect and the defect ordering and/or the conductivity, respectively. © 2009 American Institute of Physics. |
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