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Determining fundamental properties from diffraction: Electric field induced strain and piezoelectric coefficient

机译:通过衍射确定基本性质:电场感应应变和压电系数

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摘要

Neutron powder diffraction was used in operando to determine the macroscopic strain and piezoelectric coefficient as a function of applied electric field in a technically relevant actuator material. We were able to individually investigate the two coexisting phases in the material and reveal the origin of maximized strain at phase boundaries. Insight into the strain mechanisms gives evidence that, on average, the classic inverse piezoelectric effect does not apply for polycrystalline materials.
机译:在操作中使用中子粉末衍射来确定宏观应变和压电系数,作为技术相关的执行器材料中所施加电场的函数。我们能够单独研究材料中的两个共存相,并揭示相界处最大应变的起源。对应变机制的深入了解表明,平均而言,经典的逆压电效应不适用于多晶材料。

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  • 来源
    《Physical review》 |2019年第17期|174107.1-174107.6|共6页
  • 作者单位

    Karlsruhe Inst Technol, Inst Appl Mat, D-76131 Karlsruhe, Germany|UNSW, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia;

    Karlsruhe Inst Technol, Inst Appl Mat, D-76131 Karlsruhe, Germany;

    Fraunhofer Inst Ceram Technol & Syst, D-01277 Dresden, Germany;

    Norwegian Univ Sci & Technol, Mat Sci & Engn, N-7491 Trondheim, Norway;

    ANSTO, Australian Ctr Neutron Sci, Locked Bag 2001, Kirrawee, NSW 2232, Australia;

    UNSW, Sch Mat Sci & Engn, Sydney, NSW 2052, Australia;

    Karlsruhe Inst Technol, Inst Appl Mat, D-76131 Karlsruhe, Germany;

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