• Depolarization temperature and piezoelectric properties of Na1/2Bi1/2TiO3–Na1/2Bi1/2(Zn1/3Nb2/3)O3 ceramics by two-stage calcination method

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    • Keywords


      Lead-free piezoelectric ceramics; depolarization temperature; perovskite structure; piezoelectric properties.

    • Abstract


      A new group of NBT-based lead-free piezoelectric ceramics, Na1/2Bi1/2TiO3–Na1/2Bi1/2(Zn1/3Nb2/3)O3, was synthesized using the two-stage calcination method and depolarization temperatures and piezoelectric properties were also investigated. The XRD analysis showed that the ceramics system had a morphotropic phase boundary (MPB) between the rhombohedral and the tetragonal structure. The highest piezoelectric properties of 𝑑33 = 97 pC/N and 𝑘𝑡 = 0.46 were obtained near MPB compositions. Furthermore, the depolarization temperatures near MPB compositions were slightly decreased and the lowest 𝑇d was maintained at 210°C.

    • Author Affiliations


      Xin-Yu Liu1 2 Chang-Rong Zhou1 2 Zhao-Hui Shan2

      1. School of Material Science and Engineering, Central South University, Changsha Hunan 410083, China
      2. Department of Information Material Science and Engineering, Guilin University of Electronic Technology, Guilin Guangxi 541004, China
    • Dates


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