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首页> 外文期刊>CERAMICS INTERNATIONAL >High thermally stable dielectric permittivity, polarization enhancement and electrostrictive properties in Zr-substituted bismuth sodium titanate lead-free ferroelectric ceramics
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High thermally stable dielectric permittivity, polarization enhancement and electrostrictive properties in Zr-substituted bismuth sodium titanate lead-free ferroelectric ceramics

机译：ZR取代的铋钠无铅铁电陶瓷中的高热稳定介电常数，偏振增强和电致致隙性能

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摘要

Zr-substituted (Bi0.5Na0.5)(Ti1-xZrx)O-3 (BNTZ) with x = 0.02-0.4 ceramics were prepared using solid-state reaction technique and their structural, dielectric and ferroelectric properties were investigated systematically. X-ray diffraction results suggest that Zr4+ ion can enter the (Bi0.5Na0.5)TiO3 (BNT) crystal lattices at a limited value and a secondary phase appears in BNTZ ceramics when the x exceeds 0.1. Temperature-dependent di-electric permittivities of BNTZ ceramics show only one dielectric peak from room temperature to 500 degrees C for each composition, and this dielectric peak becomes broad gradually as x increases from 0.02 to 0.4. The permittivity of x = 0.4 varies less than +/- 10% between room temperature and 300 degrees C, indicating a superior thermal stability of the permittivity. Polarization enhancement is revealed by the polarization-electric field hysteresis loops and highest ferroelectric properties are obtained in x = 0.04. The electric-field-induced strains of x = 0.04 show a monotonous increase as temperature increases from 30 degrees C to 150 degrees C. At 80 kV/cm, a high strain level of 0.268% is achieved. Our results suggest that the introduction of Zr4+ ion could effectively tailor the dielectric and ferroelectric properties of BNT ceramics and x = 0.4 composition could find potential application in high temperature capacitor devices.
机译：使用固态反应技术制备具有X = 0.02-0.4陶瓷的Zr-取代（Bi0.5na0.5）（Ti1-XZRX）O-3（BNTZ），系统地研究了它们的结构，电介质和铁电性能。 X射线衍射结果表明，Zr4 +离子可以在有限值下进入（Bi0.5na0.5）TiO3（BNT）晶格，并且当X超过0.1时，在BNTZ陶瓷中出现二次相。对于每种组合物，BNTZ陶瓷的温度依赖性直接电介质仅显示一个从室温到500℃的一个介电峰值，并且该介电峰值逐渐变为宽，因为x从0.02升高到0.4。 X = 0.4的介电常数在室温和300摄氏度之间的+/- 10％变化，表明介电常数的卓越热稳定性。通过偏振 - 电场滞后环揭示偏振增强，并且在X = 0.04中获得最高铁电性能。电场诱导的X = 0.04的菌株显示单调增加随温度从30℃至150℃的温度升高。在80kV / cm处，实现了0.268％的高应变水平。我们的研究结果表明，Zr4 +离子的引入可以有效地定制BNT陶瓷的介电和铁电性能，x = 0.4组合物可以在高温电容器装置中找到潜在的应用。

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  • 来源
    《CERAMICS INTERNATIONAL》 |2020年第14期|共11页
  • 作者

    Jin Li; Huang Yunyao; Pang Jing; Zhang Leiyang; Jing Ruiyi; Guo Dong; Du Hongliang; Wei Xiaoyong; Xu Zhuo; Lu Xu; Wei Fangbin; Liu Gang;

  • 作者单位

    Xi An Jiao Tong Univ Fac Elect &

    Informat Engn Key Lab Elect Mat Res Lab Minist Educ Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Elect &

    Informat Engn Key Lab Elect Mat Res Lab Minist Educ Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Elect &

    Informat Engn Key Lab Elect Mat Res Lab Minist Educ Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Elect &

    Informat Engn Key Lab Elect Mat Res Lab Minist Educ Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Elect &

    Informat Engn Key Lab Elect Mat Res Lab Minist Educ Xian 710049 Peoples R China;

    Univ Shanghai Sci &

    Technol Sch Med Instrument &

    Food Engn Shanghai 200093 Peoples R China;

    Xi An Jiao Tong Univ Fac Elect &

    Informat Engn Key Lab Elect Mat Res Lab Minist Educ Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Elect &

    Informat Engn Key Lab Elect Mat Res Lab Minist Educ Xian 710049 Peoples R China;

    Xi An Jiao Tong Univ Fac Elect &

    Informat Engn Key Lab Elect Mat Res Lab Minist Educ Xian 710049 Peoples R China;

    Xian Univ Technol Sch Mat Sci &

    Engn Lab Funct Films Xian 710048 Peoples R China;

    Southwest Univ Sch Mat &

    Energy Chongqing 400715 Peoples R China;

    Southwest Univ Sch Mat &

    Energy Chongqing 400715 Peoples R China;

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  • 正文语种 eng
  • 中图分类 陶瓷工业;硅酸盐工业;
  • 关键词

    Dielectric; Thermal stability; Polarization; Electrostrictive; BNT;

    机译：电介质;热稳定性;极化;电致伸缩;BNT;

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