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Structure and electrical properties of MnO doped (Ba0.96Ca0.04)(Ti0.92Sn0.08)O3 lead free ceramics

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Abstract

In this work, (Ba0.96Ca0.04)(Ti0.92Sn0.08)O3–xmol MnO (BCTS–xMn) lead-free piezoelectric ceramics were fabricated by the conventional solid-state technique. The composition dependence (0 ≤ x ≤ 3.0 %) of the microstructure, phase structure, and electrical properties was systematically investigated. An O–T phase structure was obtained in all ceramics, and the sintering behavior of the BCTS ceramics was gradually improved by doping MnO content. In addition, the relationship between poling temperature and piezoelectric activity was discussed. The ceramics with x = 1.5 % sintering at temperature of 1330 °C demonstrated an optimum electrical behavior: d 33 ~ 475 pC/N, k p ~ 50 %, ε r ~ 4060, tanδ ~ 0.4 %, P r ~ 10.3 μC/cm2, E c ~ 1.35 kV/mm, T C ~ 82 °C, strain ~0.114 % and \(d_{33}^{*}\) ~ 525 pm/V. As a result, we achieved a preferable electric performance in BaTiO3-based ceramics with lower sintering temperature, suggesting that the BCTS–xMn material system is a promising candidate for lead-free piezoelectric ceramics.

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Acknowledgments

This work was supported by Project (Grant Nos. KYTZ201312 and J201220) Supported by the Scientific Research Foundation of CUIT, the Fundamental Research Funds for the Central Universities of Southwest University for Nationalities (No. 2014NZYQN11), The Foundation of Sichuan province science and technology support program, China (Grant No. GZ0198) and Scientific Research Project of Sichuan Provincial Department of Education (Grant No.16ZA0216).

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Authors and Affiliations

  1. Sichuan Province Key Laboratory of Information Materials and Devices Application, Chengdu University of Information Technology, Chengdu, 610225, People’s Republic of China

    Bo Wu, Wenjuan Wu & Min Chen

  2. Physics Department, Southwest University for Nationalities, Chengdu, 610041, People’s Republic of China

    Jian Ma

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  1. Bo Wu
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Correspondence to Bo Wu.

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Wu, B., Ma, J., Wu, W. et al. Structure and electrical properties of MnO doped (Ba0.96Ca0.04)(Ti0.92Sn0.08)O3 lead free ceramics. J Mater Sci: Mater Electron 28, 2358–2365 (2017). https://doi.org/10.1007/s10854-016-5804-7

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