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首页> 外文期刊>Materials Science and Engineering >Tailored phase transition and electric properties of Pb_(0.99)(Zr_(0.95)Ti_(0.05))_(0.98)Nb_(0.02)O_3 ferroelectric ceramics by ZnO modification
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Tailored phase transition and electric properties of Pb_(0.99)(Zr_(0.95)Ti_(0.05))_(0.98)Nb_(0.02)O_3 ferroelectric ceramics by ZnO modification

机译:ZnO改性Pb_(0.99)(Zr_(0.95)Ti_(0.05))_(0.98)Nb_(0.02)O_3铁电陶瓷的定制相变和电性能

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摘要

Microstructure, phase transition and electric properties of Pb_(0.99)(Zr_(0.95)Ti_(0.05))_(0.98)Nb_(0.02)O_3 (PZTN 95/5) ferroelectric ceramics modified with x wt% ZnO additive (where x = 0, 0.1, 0.2, 0.3 and 0.4) were systematically investigated. It was found that ZnO modification brought out an improvement of densification and an increase in grain size of PZTN 95/5 ceramics. Results of dielectric and pyroelectric measurements demonstrated that, the low temperature rhombohedral-high temperature rhombohedral ferroelectric phase transition temperature (T_(LH)) gradually decreased with increasing x to 0.2, while the Curie temperature (Tc) gradually increased. With further increasing ZnO content, however, T_(LH) and T_C almost showed no change. Additionally, the excellent ferroelectric, pyroelectric and piezoelectric properties were all achieved by less than 0.2 wt% ZnO modification. It is suggested that, due to superior room-temperature pyroelectric properties, the 0.2 wt% ZnO-modified PZTN 95/5 ceramics may be a promising material for applications in uncooled pyroelectric infrared detectors.
机译:用x wt%ZnO添加剂改性的Pb_(0.99)(Zr_(0.95)Ti_(0.05))_(0.98)Nb_(0.02)O_3(PZTN 95/5)铁电陶瓷的微观结构,相变和电性能0、0.1、0.2、0.3和0.4)进行了系统研究。发现ZnO改性带来了PZTN 95/5陶瓷致密化的改善和晶粒尺寸的增加。介电和热电测量结果表明,低温菱面体-高温菱面体铁电相变温度(T_(LH))随x的增加而逐渐降低至0.2,而居里温度(Tc)逐渐升高。但是,随着ZnO含量的进一步增加,T_(LH)和T_C几乎没有变化。另外,通过小于0.2wt%的ZnO改性,均获得了优异的铁电,热电和压电性能。建议的是,由于具有优异的室温热释电性能,0.2 wt%ZnO改性的PZTN 95/5陶瓷可能是用于未冷却热释电红外探测器的有前途的材料。

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  • 来源
    《Materials Science and Engineering》 |2018年第1期|48-52|共5页
  • 作者单位

    School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China,Key laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;

    Key laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;

    School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang 621010, China;

    Key laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;

    Key laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;

    Key laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;

    Key laboratory of Inorganic Functional Materials and Devices, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    PZTN 95/5 ceramics; ZnO modification; Phase transition; Electric properties;

    机译:PZTN 95/5陶瓷;ZnO改性;相变;电性能;

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