Abstract
The effects of oxygen partial pressure (pO2) during sintering and post-annealing treatment on the microstructure and electrical properties of Mn-added 0.3BaTiO30.1Bi(Mg1/2Ti1/2)O30.6BiFeO3 ceramics were investigated. The ceramics sintered at pO2 of 0.11 atm showed pinched polarizationelectric field (PE) loops, while the ceramics sintered in nitrogen gas could not be measured due to dielectric breakdown. By annealed at 800°C for 5 h and cooled slowly, the ceramics showed increased remanent polarizations although their PE loops were still pinched. When the as-sintered ceramics were annealed at 800°C for 5 h and then quenched into water, well-developed ferroelectric hysteresis loops were observed. These results were discussed with grain size and defect dipoles consisted of oxygen vacancies and bismuth vacancies or iron ions with a different valence.
| Original language | English |
|---|---|
| Pages (from-to) | 383-387 |
| Number of pages | 5 |
| Journal | Journal of the Ceramic Society of Japan |
| Volume | 127 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2019 Jun 1 |
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Keywords
- Ferroelectric
- Oxygen partial pressure
- Perovskite
- Piezoelectric
ASJC Scopus subject areas
- Ceramics and Composites
- Chemistry(all)
- Condensed Matter Physics
- Materials Chemistry
Cite this
Effect of oxygen partial pressure during sintering on electric properties of BiFeO3-based piezoelectric ceramics. / Aizawa, Tomoya; Fujii, Ichiro; Ueno, Shintaro; Suzuki, Tohru; Wada, Satoshi.
In: Journal of the Ceramic Society of Japan, Vol. 127, No. 6, 01.06.2019, p. 383-387.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of oxygen partial pressure during sintering on electric properties of BiFeO3-based piezoelectric ceramics
AU - Aizawa, Tomoya
AU - Fujii, Ichiro
AU - Ueno, Shintaro
AU - Suzuki, Tohru
AU - Wada, Satoshi
PY - 2019/6/1
Y1 - 2019/6/1
N2 - The effects of oxygen partial pressure (pO2) during sintering and post-annealing treatment on the microstructure and electrical properties of Mn-added 0.3BaTiO30.1Bi(Mg1/2Ti1/2)O30.6BiFeO3 ceramics were investigated. The ceramics sintered at pO2 of 0.11 atm showed pinched polarizationelectric field (PE) loops, while the ceramics sintered in nitrogen gas could not be measured due to dielectric breakdown. By annealed at 800°C for 5 h and cooled slowly, the ceramics showed increased remanent polarizations although their PE loops were still pinched. When the as-sintered ceramics were annealed at 800°C for 5 h and then quenched into water, well-developed ferroelectric hysteresis loops were observed. These results were discussed with grain size and defect dipoles consisted of oxygen vacancies and bismuth vacancies or iron ions with a different valence.
AB - The effects of oxygen partial pressure (pO2) during sintering and post-annealing treatment on the microstructure and electrical properties of Mn-added 0.3BaTiO30.1Bi(Mg1/2Ti1/2)O30.6BiFeO3 ceramics were investigated. The ceramics sintered at pO2 of 0.11 atm showed pinched polarizationelectric field (PE) loops, while the ceramics sintered in nitrogen gas could not be measured due to dielectric breakdown. By annealed at 800°C for 5 h and cooled slowly, the ceramics showed increased remanent polarizations although their PE loops were still pinched. When the as-sintered ceramics were annealed at 800°C for 5 h and then quenched into water, well-developed ferroelectric hysteresis loops were observed. These results were discussed with grain size and defect dipoles consisted of oxygen vacancies and bismuth vacancies or iron ions with a different valence.
KW - Ferroelectric
KW - Oxygen partial pressure
KW - Perovskite
KW - Piezoelectric
UR - http://www.scopus.com/inward/record.url?scp=85067405530&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85067405530&partnerID=8YFLogxK
U2 - 10.2109/jcersj2.19001
DO - 10.2109/jcersj2.19001
M3 - Article
VL - 127
SP - 383
EP - 387
JO - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
JF - Nippon Seramikkusu Kyokai Gakujutsu Ronbunshi/Journal of the Ceramic Society of Japan
SN - 1882-0743
IS - 6
ER -