Enhanced ferroelectricity in relaxor 0.7BiFeO(3)-0.3(Ba0.85Ca0.15)TiO3 ceramics using ball milling technique
Enhanced ferroelectricity in relaxor 0.7BiFeO(3)-0.3(Ba0.85Ca0.15)TiO3 ceramics using ball milling technique
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使用球磨技术增强弛豫0.7BiFeO(3)-0.3(Ba0.85Ca0.15)TiO3陶瓷的铁电性
DOI：
10.1007/s10854-019-02406-6
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
Sun Yuping
中科院分区：
文献类型：
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作者：
Shu Mingfang;Huang Wenjuan;Qin Yanfeng;Wang Dong;Li Sumei;Yin Lihua;Song Wenhai;Yang Jie;Zhu Xuebin;Sun Yuping
采用传统固相反应法合成了BF-BCT陶瓷。通过行星式球磨技术，BF-BCT陶瓷的电性能取决于球磨时间。结果表明，球磨40 h制备的样品在室温下具有较大的反射极化率，其值上级优于无Pb BF基陶瓷。此外，通过PUND测量来确认恢复极化的值，以消除漏电流的贡献。我们归因于大的反射极化的氧空位的减少证实了X射线光电子能谱的结果。此外，BF-BCT陶瓷表现出介电弛豫过程，这是由于氧空位在陶瓷内部的扩散引起的。
(BF–BCT) ceramics were synthesized with a conventional solid-state reaction method. The electrical properties of the BF–BCT ceramics depend on the milling time via a planetary ball-milling technique. The results show that the sample prepared by milling for 40 h possesses a rather large remanent polarization ofand this value is superior to that of Non-Pb BF-based ceramics at room temperature. Moreover, the values of remanent polarization were confirmed by a PUND measurement to eliminate the contribution of leakage current. We attributed the large remanent polarization to the decrease in oxygen vacancies confirmed by X-ray photoelectron spectroscopy results. Moreover, the BF–BCT ceramics exhibit the dielectric relaxation process caused by the diffusion of oxygen vacancies inside ceramics.