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      Phase evolution, microstructure, electric properties of (Ba 1–xBi 0.67xNa 0.33x)(Ti 1–xBi 0.33xSn 0.67x)O 3 ceramics

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          Abstract

          (Ba 1–xBi 0.67xNa 0.33x)(Ti 1–xBi 0.33xSn 0.67x)O 3 (abbreviated as BBNTBS, 0.02≤ x ≤ 0.12) ceramics were fabricated via a traditional solid state reaction method. The phase transition of BBNTBS from tetragonal to pseudo cubic is demonstrated by XRD and Raman spectra. The BBNTBS (x = 0.1) ceramics have decent properties with a high ɛ r (~2250), small Δɛ/ɛ 25°C values of ±15% over a wide temperature range from –58 to 171 °C, and low tanδ ≤ 0.02 from 10 to 200 °C. The basic mechanisms of conduction and relaxation processes in the high temperature region were thermal activation, and oxygen vacancies might be the ionic charge transport carriers. Meanwhile, BBNTBS (x = 0.1) exhibited decent energy storage density (J d = 0.58 J/cm 3) and excellent thermal stability (the variation of J d is less than 3% in the temperature range of 25–120 °C), which could be a potential candidate for high energy density capacitors.

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          Author and article information

          Journal
          J Adv Ceram
          Journal of Advanced Ceramics
          Tsinghua University Press and Springer-Verlag Berlin Heidelberg (USA )
          2227-8508
          2226-4108
          01 September 2019
          01 October 2019
          : 8
          : 3
          : 427-437
          Affiliations
          aCollaborative Innovation Center for Exploration of Hidden Nonferrous Metal Deposits and Development of New Materials in Guangxi, Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, School of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China
          Author notes
          *Corresponding author: Xiuli CHEN, E-mail: cxlnwpu@ 123456163.com
          Article
          s40145-019-0326-4
          10.1007/s40145-019-0326-4
          Copyright © The Author(s)

          This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. See https://creativecommons.org/licenses/by/4.0/.

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