Large pyroelectric response in (Pb0.87La0.02Ba0.1)(Zr0.7Sn0.3−xTix)O3 antiferroelectric ceramics under DC bias field
Large pyroelectric response in (Pb0.87La0.02Ba0.1)(Zr0.7Sn0.3−xTix)O3 antiferroelectric ceramics under DC bias field
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DOI：
10.1007/s00339-010-6062-9
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发表时间：
2011-06
期刊：
影响因子：
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通讯作者：
Qingfeng Zhang;Shenglin Jiang;Yike Zeng;M. Fan;Qingping Wang;Guangzu Zhang;Yangyang Zhang;Yan Yu;Jing Wang
中科院分区：
文献类型：
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作者：
Qingfeng Zhang;Shenglin Jiang;Yike Zeng;M. Fan;Qingping Wang;Guangzu Zhang;Yangyang Zhang;Yan Yu;Jing Wang
采用常规固相反应法制备了（Pb0.87La0.02Ba0.1）（Zr0.7Sn0.3−xTix）O3（PLBZST, 0.06≤x≤0.09）反铁电陶瓷，并对其铁电、介电和热释电性能进行了系统研究。不同Ti含量的PLBZST均处于反铁电相atT=50℃，接近最低相变温度。与传统FE陶瓷相比，PLBZST反铁电陶瓷具有更高的电场致热释电系数(p)。当Ti含量从0.06增加到0.09时，在500 V/mm直流偏置场下，热释电系数从1000 μC/m2K增加到6500 μC/m2K。当施加850 V/mm直流偏置电场时，材料的最大热释电系数为8400 μC/m2K (x=0.09)，远远大于传统相变热释电材料的热释电系数。大的热释电响应有利于红外探测器和热成像传感器的发展。
(Pb0.87La0.02Ba0.1)(Zr0.7Sn0.3−xTix)O3(PLBZST, 0.06≤x≤0.09) antiferroelectric ceramics were fabricated by conventional solid state reaction process, and their ferroelectric, dielectric, and pyroelectric properties were systemically investigated. PLBZST with different Ti content were all confirmed to be in an antiferroelectric phase atT=50°C, which is close to the lowest phase transition temperature. Compared with conventional FE ceramics, PLBZST antiferroelectric ceramics exhibited higher electric field induced pyroelectric coefficient (p). As the content of Ti increased from 0.06 to 0.09, the pyroelectric coefficient increased from 1000 to 6500 μC/m2K under a 500 V/mm DC bias field. The maximum pyroelectric coefficient of 8400 μC/m2K was obtained atx=0.09 when an 850 V/mm DC bias field was applied, which is far larger than that of conventional phase transition pyroelectric materials. Large pyroelectric response is beneficial for the development of infrared detectors and thermal imaging sensors.