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Low dielectric loss and enhanced tunable properties of donor–acceptor co-doped Ba0.67Sr0.33TiO3 ceramics

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Abstract

Ba0.67Sr0.33TiO3 (BST) ceramics with 0.7 mol% Mn and y mol% Y (y = 0.6, 1.2, 1.8, 2.4) additions were fabricated via citrate–nitrate combustion derived powders, and the microstructure, dielectric properties and tunable properties of BST ceramics were investigated. The doping behavior of Y changes from acceptor doping to donor doping with increasing the content of Y, and the dielectric constant and loss tend to decrease with increasing doped concentration. The ceramic sample with 1.8 mol% Y exhibits the optimal properties with dielectric constant of 5520, dielectric loss of 0.003 and tunability of 43 % at 10 kHz and 20 ºC, respectively. Both the low dielectric loss and enhanced tunable properties of the BST ceramic are useful for tunable applications.

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Acknowledgments

This work was supported by Fundamental Research Funds for the Central Universities (XDJK2015C066).

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Authors and Affiliations

  1. Chongqing College of Humanities, Science and Technology, Chongqing, 401524, China

    Hua Qiang

  2. Faculty of Materials and Energy, Southwest University, Chongqing, 400715, China

    Zunping Xu

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  1. Hua Qiang
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  2. Zunping Xu
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Correspondence to Zunping Xu.

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Qiang, H., Xu, Z. Low dielectric loss and enhanced tunable properties of donor–acceptor co-doped Ba0.67Sr0.33TiO3 ceramics. J Mater Sci: Mater Electron 27, 9976–9980 (2016). https://doi.org/10.1007/s10854-016-5068-2

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  • DOI: https://doi.org/10.1007/s10854-016-5068-2

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