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Realizing a ferroelectric state and high pyroelectric performance in antiferroelectric-oxide composites.
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-06-19 , DOI: 10.1039/d0dt01739f Ling Li 1 , Di Fang 1 , Rui-Xue Wang 1 , Meng Shen 2 , Haibo Zhang 3 , Yue-Feng Tang 1 , Shan-Tao Zhang 1
Dalton Transactions ( IF 3.5 ) Pub Date : 2020-06-19 , DOI: 10.1039/d0dt01739f Ling Li 1 , Di Fang 1 , Rui-Xue Wang 1 , Meng Shen 2 , Haibo Zhang 3 , Yue-Feng Tang 1 , Shan-Tao Zhang 1
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We report a robust room temperature ferroelectric (FE) state in (1 − x)Pb0.99Nb0.02[(Zr0.57Sn0.43)0.933Ti0.067]0.98O3–xZnO ((1 − x)PNZST–xZnO) composites, where PNZST shows a predominant antiferroelectric (AFE) nature due to ZnO-induced internal strain. Upon heating, a FE-AFE transition occurs and generates high pyroelectric performance. The composite with x = 0.1 shows a peak pyroelectric coefficient of p = 2450.7 × 10−4 C m−2 K−1 and figures of merit of current responsivity Fi = 926.9 × 10−10 m V−1, voltage responsivity Fv = 1334.3 × 10−2 m2 C−1, and detectivity Fd = 1194.8 × 10−5 Pa−1/2, which are about two orders of magnitude higher than those of most perovskite pyroelectric oxides. More interestingly, the FE-AFE transition temperature, i.e., the temperature corresponding to peak pyroelectric performance, is tunable in a wide temperature range from 30 °C to 65 °C. This work not only provides a promising material candidate for high performance pyroelectric devices, but also an alternative idea to develop ferroelectric and pyroelectric properties based on antiferroelectric materials.
中文翻译：
在反铁电氧化物复合物中实现铁电状态和高热电性能。
我们报告了在（1 − x）Pb 0.99 Nb 0.02 [（Zr 0.57 Sn 0.43）0.933 Ti 0.067 ] 0.98 O 3 – x ZnO（（1 − x）PNZST– x ZnO）复合材料中具有强壮的室温铁电（FE）状态，其中PNZST由于ZnO引起的内部应变而显示出主要的反铁电（AFE）性质。加热时，发生FE-AFE转变并产生高热电性能。x = 0.1的复合材料的峰热电系数为p = 2450.7×10 -4 C m -2K -1和电流响应系数F i = 926.9×10 -10 m V -1，电压响应系数F v = 1334.3×10 -2 m 2 C -1，检测系数F d = 1194.8×10 -5 Pa -1/2，比大多数钙钛矿热电氧化物高约两个数量级。更有趣的是，FE-AFE的转变温度，即与峰热电性能相对应的温度在30°C至65°C的宽温度范围内可调。这项工作不仅为高性能热释电器件提供了有希望的材料候选人，而且为基于反铁电材料开发铁电和热电特性提供了另一种思路。
更新日期：2020-07-21
中文翻译：
在反铁电氧化物复合物中实现铁电状态和高热电性能。
我们报告了在（1 − x）Pb 0.99 Nb 0.02 [（Zr 0.57 Sn 0.43）0.933 Ti 0.067 ] 0.98 O 3 – x ZnO（（1 − x）PNZST– x ZnO）复合材料中具有强壮的室温铁电（FE）状态，其中PNZST由于ZnO引起的内部应变而显示出主要的反铁电（AFE）性质。加热时，发生FE-AFE转变并产生高热电性能。x = 0.1的复合材料的峰热电系数为p = 2450.7×10 -4 C m -2K -1和电流响应系数F i = 926.9×10 -10 m V -1，电压响应系数F v = 1334.3×10 -2 m 2 C -1，检测系数F d = 1194.8×10 -5 Pa -1/2，比大多数钙钛矿热电氧化物高约两个数量级。更有趣的是，FE-AFE的转变温度，即与峰热电性能相对应的温度在30°C至65°C的宽温度范围内可调。这项工作不仅为高性能热释电器件提供了有希望的材料候选人，而且为基于反铁电材料开发铁电和热电特性提供了另一种思路。
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