Nonlinear dielectric and discharge properties of Pb0.94La0.04[(Zr0.56Sn0.44)0.84Ti0.16]O3 antiferroelectric ceramics
Nonlinear dielectric and discharge properties of Pb0.94La0.04[(Zr0.56Sn0.44)0.84Ti0.16]O3 antiferroelectric ceramics
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DOI：
10.1063/1.4964736
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发表时间：
2016-10
影响因子：
3.2
通讯作者：
Ran Xu;Zhuo Xu;Yujun Feng;Xiaoyong Wei;Jingjing Tian
中科院分区：
文献类型：
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作者：
Ran Xu;Zhuo Xu;Yujun Feng;Xiaoyong Wei;Jingjing Tian
采用固相反应法制备了Pb0.94La0.04[（Zr0.56Sn0.44）0.84Ti0.16]O3反铁电（AFE）陶瓷，研究了其非线性介电和放电性能。在30 kV/cm附近，由于反铁电体（AFE）向铁电体的相变，可释放能量密度和介电常数将急剧增加。可释放能量密度在30 °C时达到最大值（40 kV/cm下为0.50 J/cm 3），然后随温度升高而降低。在低于60 °C时，下降率小于13%，并且由于从AFE到顺电的相变，在160 °C时下降率将是显著的。AFE材料独特的介电性能决定了其特殊的放电性能。放电电流密度可达447 A/cm ~ 2，放电过程在亚微秒内完成。经过10 000次充放电循环后，放电电流和磁滞回线变化很小。高的能量密度、快的放电速度和良好的抗疲劳性显示了所获得的AF的潜力。
Pb0.94La0.04[(Zr0.56Sn0.44)0.84Ti0.16]O3 antiferroelectric (AFE) ceramics were prepared by solid-state reaction and their nonlinear dielectric and discharge properties were studied. The releasable energy density and dielectric constant will increase sharply near 30 kV/cm due to the phase transition from antiferroelectric (AFE) to ferroelectric. The releasable energy density reaches maximum (0.50 J/cm3 under 40 kV/cm) at 30 °C and then decreases with temperature rise. The declination rate is less than 13% below 60 °C and will be remarkable at 160 °C due to the phase transition from AFE to paraelectric. The unique dielectric properties of AFE materials would result in special discharge properties. The discharge current density could be as high as 447 A/cm2, and the process finishes in sub-microsecond. The discharge current and hysteresis loop change very slightly after 10 000 charge–discharge cycles. The high energy density, fast discharge speed, and good fatigue resistance show the potential of obtained AF...