首页> 外文期刊>Materials Science and Engineering >Effect of cerium additives on structure and electrical properties of Aurivillius oxides (K_(0.16)Na_(0.84))_(0.5)Bi_(4.5)Ti_4O_(15)
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Effect of cerium additives on structure and electrical properties of Aurivillius oxides (K_(0.16)Na_(0.84))_(0.5)Bi_(4.5)Ti_4O_(15)

机译:铈添加剂对金刚砂氧化物(K_(0.16)Na_(0.84))_(0.5)Bi_(4.5)Ti_4O_(15)的结构和电性能的影响

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摘要

The effect of cerium additive on structure and electric properties of Aurivillius oxide (K_(0.16)Na_(0.84))_(0.5)Bi_(4.5)Ti_4O_(15) (KNBT), was investigated. Phase analysis was performed by X-ray diffraction analyses (XRD) and Raman spectroscopy. Morphologies were assessed by the scanning electron microscopy. Piezoelectric properties of the KNBT ceramic were improved by the modification of cerium ions. Dielectric loss at high temperature of the KNBT ceramic was also suppressed because of the cerium ions introduced. Piezoelectric coefficient (d_(33)) and Curie temperature (T_c) of KNBT ceramic modified with 0.50 wt% cerium were 28 pC/N and 656 ℃, respectively, together with higher resistivity (higher than 10~7 Ω cm at 550 ℃). Moreover, reasons for the improvement of electric properties of the KNBT ceramic modified by cerium were also discussed.
机译:研究了铈添加剂对金刚砂氧化物(K_(0.16)Na_(0.84))_(0.5)Bi_(4.5)Ti_4O_(15)(KNBT)的结构和电性能的影响。通过X射线衍射分析(XRD)和拉曼光谱法进行相分析。通过扫描电子显微镜评估形态。通过修饰铈离子可以改善KNBT陶瓷的压电性能。由于引入了铈离子,还抑制了KNBT陶瓷在高温下的介电损耗。 0.50 wt%铈改性的KNBT陶瓷的压电系数(d_(33))和居里温度(T_c)分别为28 pC / N和656℃,电阻率更高(在550℃时高于10〜7Ωcm)。 。此外,还讨论了改善铈改性的KNBT陶瓷电性能的原因。

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  • 来源
    《Materials Science and Engineering》 |2014年第8期|21-25|共5页
  • 作者单位

    Shaanxi key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710032, China,College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;

    College of Physics and Information Technology, Shaanxi Normal University, Xi'an 710062, China;

    Shaanxi key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710032, China;

    Shaanxi key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710032, China;

    Shaanxi key Laboratory of Photoelectric Functional Materials and Devices, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710032, China;

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

    Aurivillius oxides; High temperature piezoelectric cermaics; Piezoelectric properties; Resistivity;

    机译:Aurivillius氧化物;高温压电陶瓷;压电性能;电阻率;

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