Piezoelectric Properties and Local Structure Analysis of (1-<i>x</i>)(Na<sub>0.50</sub>K<sub>0.45</sub>Li<sub>0.05</sub>)NbO<sub>3</sub>-<i>x</i>(Ba<sub>0.85</sub>Ca<sub>0.15</sub>)(Zr<sub>0.10</sub>Ti<sub>0.90</sub>)O<sub>3</sub> Solid Solutions Produced by Malic Acid Complex Solution Method

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  • Takada Eri
    Department of Chemical Engineering and Materials Science, Graduate School of Engineering, University of Hyogo
  • Kobune Masafumi
    Department of Chemical Engineering and Materials Science, Graduate School of Engineering, University of Hyogo
  • Nakai Tomoaki
    Department of Chemical Engineering and Materials Science, Graduate School of Engineering, University of Hyogo
  • Kikuchi Takeyuki
    Department of Chemical Engineering and Materials Science, Graduate School of Engineering, University of Hyogo
  • Yoneda Yasuhiro
    Reaction Dynamics Research Division, Japan Atomic Energy Agency (JAEA)

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<p>((1-x)(Na0.50K0.45Li0.05)NbO3-x(Ba0.85Ca0.15)(Zr0.1Ti0.9)O3 (NKLN-CZT, x = 0-0.08) powders were synthesized by the malic acid complex solution method, and NKLN-BCZT solid solutions were then fabricated using a conventional solid-state reaction technique. The piezoelectric properties of the resulting materials were measured, and the x = 0.01 sample was found to exhibit the maximum longitudinal-length-mode piezoelectric coefficient and radial-mode electromechanical coupling factor values of 177 pC/N and 33%, respectively. On the basis of both the results for piezoelectric properties and for the local structural analysis using high-energy X-ray diffraction (HEXRD), measuring the degree of distortion of NbO6 octahedra using HEXRD can be an effective method for the development of high-performance piezoelectric materials.</p>

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