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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Reversible Domain-Wall-Motion-Induced Low-Hysteretic Piezoelectric Response in Ferroelectrics
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Reversible Domain-Wall-Motion-Induced Low-Hysteretic Piezoelectric Response in Ferroelectrics

机译：可逆域 - 壁运动引起的铁电气中的低滞回压电响应

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摘要

The mobility of domain walls under an external stimulus plays a crucial role in the piezoelectricity of ferroelectric materials, which usually manifests itself as an irreversible and hysteretic characteristic. Herein, we report a reversible domain-wall motion that contributes almost 55% to the significant piezoelectric response (d(33)* = 730 pm/V) with low strain hysteresis (H-s = 10.76%) at a composition close to the morphotropic phase boundary (MPB) in a (1 - x)Ba(Ti0.88Sn0.12)O-3-x(Ba0.7Ca0.3)TiO3 system. Such a reversible domain-wall motion is evidenced by the piezo response force microscopy measurement. Moreover, transmission electron microscopy observation indicates a hierarchical domain structure for MPB composition (x = 0.28), and the associated high-resolution image suggests the presence of spatial local chemical heterogeneity. Combined with phase field modeling, we reveal that the reversible domain-wall motion is attributed to the asymmetric landau free energy profile as a result of morphotropic phase boundary incorporation with the local heterogeneity. Our work may advance the development of low-hysteretic piezoelectric materials in the application of energy converter or other devices with low energy consumption and high precision.
机译：在外部刺激下的畴壁的移动性在铁电材料的压电性中起着至关重要的作用，这通常表现为一种不可逆和滞后特性。在此，我们报告了可逆域 - 壁运动，其在靠近Morphothic阶段的组合物中具有低应变滞后（D（33）* = 730mp / v）的显着压电响应（D（33）* = 730mp / v）。边界（MPB）（1 - x）Ba（Ti0.88Sn0.12）O-3-X（Ba0.7Ca0.3）TiO3系统。压电响应力显微镜测量可以证明这种可逆域壁运动。此外，透射电子显微镜观察表明MPB组合物的分层结构域结构（x = 0.28），并且相关联的高分辨率图像表明存在空间局部化学异质性。结合相场建模，我们揭示了可逆域 - 壁运动归因于非对称Landau自由能量曲线，其由于Morphotopic相位边界与局部异质性掺入。我们的工作可以推进在能量转换器或其他具有低能量消耗和高精度的其他装置的应用中的低滞回压电材料的开发。

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  • 作者

    Hu Xinghao; Gao Jinghui; Wang Yan; Liu Yongbin; Li Linglong; Wang Dong; Li Fei; Yao Ruifeng; Zhong Lisheng; Ren Xiaobing;

  • 作者单位

    Xi An Jiao Tong Univ State Key Lab Elect Insulat &

    Power Equipment Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Elect Insulat &

    Power Equipment Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Elect Insulat &

    Power Equipment Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Elect Insulat &

    Power Equipment Xian 710049 Shaanxi Peoples R China;

    Tsinghua Univ State Key Lab Low Dimens Quantum Phys Beijing 100084 Peoples R China;

    Xi An Jiao Tong Univ Frontier Inst Sci &

    Technol Ctr Microstruct Sci Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ Minist Educ Key Lab Elect Mat Res Lab Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Elect Insulat &

    Power Equipment Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Elect Insulat &

    Power Equipment Xian 710049 Shaanxi Peoples R China;

    Xi An Jiao Tong Univ State Key Lab Elect Insulat &

    Power Equipment Xian 710049 Shaanxi Peoples R China;

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  • 正文语种 eng
  • 中图分类 物理化学（理论化学）、化学物理学;
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