NDLI: High temperature dielectric, ferroelectric and piezoelectric properties of Mn-modified BiFeO$_{3}$-BaTiO$

Content Provider	Springer Nature Link
Author	Li, Qiang Wei, Jianxin Cheng, Jinrong Chen, Jianguo
Copyright Year	2016
Abstract	Lead-free and high-temperature 0.71BiFeO$_{3}$-0.29BaTiO$_{3}$ ceramics with Mn modification (BF-BT-x %Mn) were fabricated by conventional solid-state reaction method, and the high temperature dielectric, ferroelectric and piezoelectric properties were investigated. All compositions exhibited pseudo-cubic phases. Mn modification improved the electrical properties of BF-BT solid solutions at both room and high temperature. The Curie temperature T $_{C}$, depolarization temperature T $_{d}$, dielectric constant ε $_{r}$, dielectric loss tanδ, piezoelectric constant d $_{33}$, electromechanical coupling factor k $_{p}$, remnant polarization P $_{r}$ of BF-BT-1.2 %Mn ceramics were 506, 500 °C, 556, 0.04, 169 pC N$^{−1}$, 0.373, 31.4 μC cm$^{−2}$, respectively. The ε $_{r}$, tanδ, and k $_{p}$ of BF-BT-1.2 %Mn ceramics were stable with the increase of temperature until 500 °C. The coercive field E $_{c}$ of BF-BT-1.2 %Mn ceramics was nearly 30 kV cm$^{−1}$ at 200 °C, which was much larger than those of PZT, BS-PT,BNT and KNN ceramics. The high field strain coefficient d*$_{33}$ reached as large as 525 pm V$^{−1}$ at 200 °C. These results showed that the BF-BT-x %Mn ceramics were promising candidate for high temperature piezoelectric applications.
Starting Page	229
Ending Page	237
Page Count	9
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	52
Issue Number	1
e-ISSN	15734803
Language	English
Publisher	Springer US
Publisher Date	2016-09-14
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Materials Science Characterization and Evaluation of Materials Polymer Sciences Continuum Mechanics and Mechanics of Materials Crystallography and Scattering Methods Classical Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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