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The electrical and optical properties of Nb-doping PLZT (9/65/35) transparent ceramics
Journal of Electroceramics ( IF 1.7 ) Pub Date : 2020-05-22 , DOI: 10.1007/s10832-020-00212-9
Zhewei Xu , Xia Zeng , Zhaodong Cao , Liang Ling , Pingsun Qiu , Xiyun He

In the past few decades, transparent electro-optical ceramics PLZT (9/65/35) (Pb0.91La0.09(Zr0.65Ti0.35)0.9775O3) with special properties, particularly high transmittance in visible light, have gained much attention. However, restricted by the large ferroelectric hysteresis, the prospect is not optimistic. In this article, Pb0.91La0.09(Zr0.65Ti0.35)0.9775-5x/4NbxO3 (abbreviated as PLZTN) transparent ceramics with varying Nb content (x = 0.000, 0.005, 0.010, 0.015) were fabricated by hot press sintering process under oxygen atmosphere. Electrical and optical properties were systematically studied. The temperature dependence of the dielectric constant showed a diffuse phase transition indicated typical relaxor behaviour. Moreover, the temperature at maximum dielectric constant (Tm) are near about 63 °C, almost unchanged. Comparing with undoped samples, the PLZTN with x = 0.010 Nb doping shows a dramatic reduction of 162.5% in ferroelectric hysteresis, with only a slight decrease in the maximum polarization from 30.04 µC/cm2 to 28.53 µC/cm2. The quadratic electro optic coefficient experienced 54.8% reduction but still satisfy the application requirements. In terms of transmittance, the PLZTN samples kept a high value of transmittance (about 64%) along with increasing Nb content. Hence, the conclusion can be drawn that Nb doping in PLZT (9/65/35) is a novel strategy to reduce the ferroelectric hysteresis.



中文翻译:

掺N的PLZT(9/65/35)透明陶瓷的电学和光学性能

在过去的几十年中,具有特殊性能,特别是在可见光下具有高透射率的透明电光陶瓷PLZT(9/65/35)(Pb 0.91 La 0.09(Zr 0.65 Ti 0.350.9775 O 3)受到了广泛的关注。但是,受大铁电磁滞的限制,前景并不乐观。在这篇文章中,铅0.91的La 0.09(锆0.65的Ti 0.350.9775-5 X / 4的Nb X ø 3(缩写为PLZTN)透明陶瓷具有不同Nb含量(X 在氧气气氛下通过热压烧结法制得=(0.000、0.005、0.010、0.015)。对电学和光学性质进行了系统的研究。介电常数的温度依赖性显示出扩散相变,表明典型的弛豫行为。而且,最大介电常数(T m)下的温度接近63℃,几乎没有变化。与未掺杂样品相比,x  = 0.010 Nb掺杂的PLZTN的铁电磁滞显着降低了162.5%,最大极化仅略有降低,从30.04 µC / cm 2降至28.53 µC / cm 2。二次电光系数降低了54.8%,但仍满足应用要求。在透射率方面,随着Nb含量的增加,PLZTN样品保持了较高的透射率值(约64%)。因此,可以得出结论,PLZT(9/65/35)中的Nb掺杂是减少铁电磁滞的一种新颖策略。

更新日期:2020-05-22
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