Phase transition behavior, dielectric and ferroelectric properties of(1 − x)(Bi0.5Na0.5)TiO3-xBa0.85Ca0.15Ti0.9Zr0.1O3 ceramics
Phase transition behavior, dielectric and ferroelectric properties of(1 − x)(Bi0.5Na0.5)TiO3-xBa0.85Ca0.15Ti0.9Zr0.1O3 ceramics
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DOI：
10.1016/j.jeurceramsoc.2016.03.005
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发表时间：
2016-08
影响因子：
5.7
通讯作者：
Y. Pu;Y. Pu;Mouteng Yao;Hairui Liu;T. Frömling
中科院分区：
文献类型：
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作者：
Y. Pu;Y. Pu;Mouteng Yao;Hairui Liu;T. Frömling
采用固相法制备了（1 −x）（Bi0.5Na0.5）TiO 3-xBa0.85Ca0.15Ti0.9Zr0.1O3陶瓷，并对其相结构和电性能进行了研究。在x = 0.1-0.4组分的介电常数曲线上有两个明显的极大值。第一个异常是由于LT-PNR的热演化，第二个异常是由于两种类型的PNR之间的相变和HT-PNR的热演化。x = 0.3的样品具有87 °C至310 °C的工作温度范围。大多数样品表现出介电热滞后。在x = 0.2-0.4的范围内，组成具有明显的收缩P-E磁滞回线。在0.7BNT-0.3BCTZ组合物中观察到427 μ m/V的大d33*。当x = 0.5-0.6时，样品的P-E磁滞回线较窄，当x = 0.5时，样品的能量密度为0.6649 J/cm 3，储能效率为83.17%，最适合作为高能量密度电容器。
(1 −x)(Bi0.5Na0.5)TiO3-xBa0.85Ca0.15Ti0.9Zr0.1O3ceramics were prepared by solid state route and their phase structure and electric properties were investigated with the focus on optimizing properties for capacitor applications. There are two obvious maxima in the permittivity curves forx= 0.1–0.4 compositions. The first anomaly is suggested to be due to thermal evolution of LT-PNRs and the second one is attributed to the phase transition between the two types PNRs and the thermal evolution of HT-PNRs. Thex= 0.3 sample has an operational temperature range from 87 °C to 310 °C. Most of the samples exhibit a dielectric thermal hysteresis. Thex= 0.2–0.4 compositions exhibit a significant pinchedP-Ehysteresis loops. A large d33* of 427 pm/V was observed in 0.7BNT-0.3BCTZ composition. Thex= 0.5–0.6 samples show a slimP-Ehysteresis loop, and the sample withx= 0.5 exhibits high energy density of 0.6649 J/cm3and energy storage efficiency of 83.17%, making it most suitable for application as high energy density capacitors.