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Effect of poling temperature on piezoelectric coefficient in (Na0.52K0.4425Li0.0375)(Nb0.86Ta0.06Sb0.08)O3 ceramics

Authors

  • Yu Huan,

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, P. R. China
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  • Xiaohui Wang,

    Corresponding author
    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, P. R. China
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  • Shaopeng Zhang,

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, P. R. China
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  • Renlong Gao,

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, P. R. China
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  • Longtu Li

    1. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, P. R. China
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Abstract

The influence of poling temperature (Tp) on d33 and inline image of (Na0.52K0.4425Li0.0375)(Nb0.86Ta0.06Sb0.08)O3 ceramics is investigated. No notable stress is induced as there is not apparent phase transition on cooling when the ceramics are poled below orthorhombic-tetragonal phase transition temperature (To–t). However, stress emerges by phase transition when poled above To–t leading to degrade d33. Consequently, the ceramics poled near To–t exhibit the best d33 of 350 pC N−1. In addition, inline image, derived from intrinsic and extrinsic contributions, remains about the same with Tp because the ultrafine, lamellar domains could easily respond to an external electric field.

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