Dielectric and ferroelectric properties of BiFeO3 ceramics sintered in different atmospheres
Dielectric and ferroelectric properties of BiFeO3 ceramics sintered in different atmospheres
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不同气氛下烧结BiFeO3陶瓷的介电和铁电性能
DOI：
10.1016/j.ceramint.2012.10.065
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发表时间：
2013-05
影响因子：
5.2
通讯作者：
Yuan, Qibin
中科院分区：
文献类型：
--
作者：
Liu, Hongyong;Pu, Yongping;Shi, Xuan;Yuan, Qibin
采用微波-水热法成功合成了纯BiFeO 3粉体，并在不同气氛下进行了烧结。采用X射线衍射（XRD）、扫描电子显微镜（SEM）、介电性能测试（LCR）和极化电滞回线对BiFeO 3陶瓷样品进行了表征。本文研究了不同气氛（包括空气、N2、O2和H2）对BiFeO 3陶瓷铁电性能的影响。结果表明，在H2和N2气氛下烧结的BiFeO 3陶瓷为单相菱面体畸变钙钛矿结构，没有其它杂质相的存在。O2和H2气氛对BiFeO 3陶瓷的介电性能有很大影响。在H2气氛中烧结的样品具有最高的介电常数。室温下的极化电滞回线表明，在H2和N2气氛中烧结的样品具有较高的自发极化和较低的击穿电场，而在O2气氛中烧结的样品的铁电性能较差。
Pure BiFeO3powders were successfully synthesized by microwave-hydrothermal processing, and the pellets were sintered in different atmospheres. The properties of BiFeO3ceramic samples were characterized with X-ray diffraction (XRD), scanning electron microscopy (SEM), dielectric measurements (LCR) and polarization-field hysteresis loop. The effects of different atmospheres (including air, N2, O2and H2) on ferroelectric properties of BiFeO3ceramics were studied in this paper. The results show that the BiFeO3ceramics sintered in H2and N2atmosphere have a single-phase rhombohedra distorted perovskite structure with no trace of other impurity phases. The dielectric properties of BiFeO3ceramics were greatly influenced by O2and H2atmospheres. The samples sintered in H2atmosphere have the highest dielectric constant. Polarization-field hysteresis loops measured at room temperature indicated the samples sintered in H2and N2atmospheres have higher spontaneous polarization and lower breakdown field, but the ferroelectric properties of samples sintered in O2atmospheres were poor.
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影响因子：
2.6
作者：
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通讯作者：
B. Luo;Changle Chen;Zhi Xu;Q. Xie
影响因子：
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作者：
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影响因子：
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作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
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DOI：
10.1016/j.jeurceramsoc.2011.03.018
发表时间：
2011-12-01
影响因子：
5.7
作者：
Bernardo, M. S.;Jardiel, T.;Villegas, M.
通讯作者：
Villegas, M.