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首页> 外文期刊>Journal of Materials Research >Ferroelectric and piezoelectric properties of (Bi_(1/2)Na_(1/2))TiO_3-BiFeO_3 ceramics
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Ferroelectric and piezoelectric properties of (Bi_(1/2)Na_(1/2))TiO_3-BiFeO_3 ceramics

机译：（Bi_（1/2）Na_（1/2））TiO_3-BiFeO_3陶瓷的铁电和压电性能

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摘要

(1 - x) (Bi_(1/2)Na_(1/2))TiO_3-xBiFeO_3 (x = 0-0.9) ceramics were prepared and the ferroelectric and piezoelectric properties along with the crystal structure were investigated. The crystal system of the ceramics was rhombohedral with the R3c symmetry throughout the compositions. The rhombohedral distortion (90° - α), where α was the rhombohedral angle based on a pseudocubic perovskite cell, was minimized at x - 0.1, while the lattice constant increased linearly with x. Saturated ferroelectric polarization-electric field hysteresis loops were observed at x = 0-0.6. The coercive field was reduced at x = 0.05-0.2 and the high remanent polarization of 30-35 μC/cm~2 was obtained at x = 0-0.4. The piezoelectric constants d_(33) and d_(33)~* (which was calculated from a unipolar strain-electric field curve) were maximized to 93 pC/N at x = 0.1 and 183 pm/V at x = 0.05, respectively. These results suggested that the increase in the piezoelectric properties was associated with the reduction in the rhombohedral distortion, which could be useful in development of high performance lead-free piezoelectric materials.
机译：制备了（1-x）（Bi_（1/2）Na_（1/2）TiO_3-xBiFeO_3（x = 0-0.9）陶瓷，并研究了铁电和压电性能以及晶体结构。在整个组合物中，陶瓷的晶体体系为R3c对称的菱面体。菱形扭曲（90°-α）（其中α是基于伪立方钙钛矿晶胞的菱形角）在x-0.1时最小化，而晶格常数随x线性增加。在x = 0-0.6处观察到饱和铁电极化-电场磁滞回线。在x = 0.05-0.2时，矫顽场减小，在x = 0-0.4时获得了30-35μC/ cm〜2的高剩余极化强度。压电常数d_（33）和d_（33）〜*（由单极应变-电场曲线计算）分别在x = 0.1时最大为93 pC / N，在x = 0.05时最大为183 pm / V。这些结果表明，压电性能的提高与菱面体形变的减少有关，这可用于开发高性能无铅压电材料。

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  • 来源
    《Journal of Materials Research》 |2016年第1期|28-35|共8页
  • 作者

    Ichiro Fujii; Yutaka Ito; Teppei Suzuki; Takahiro Wada;

  • 作者单位

    Department of Materials Chemistry, Ryukoku University, Seta, Otsu 520-2194 Japan;

    Department of Materials Chemistry, Ryukoku University, Seta, Otsu 520-2194 Japan;

    Department of Materials Chemistry, Ryukoku University, Seta, Otsu 520-2194 Japan;

    Department of Materials Chemistry, Ryukoku University, Seta, Otsu 520-2194 Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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