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Influence of Al2O3 additive on the dielectric behavior and energy density of Ba0.5Sr0.5TiO3 ceramics

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Abstract

High dense Ba0.5Sr0.5TiO3 ceramics with Al2O3 additives have been prepared by a method combined the sol–gel process and the solid state reaction. Phase compositions, microstructure and dielectric behaviors are investigated systematically. Our experiment results reveal that the Al2O3 additives reduce the dielectric constant slightly and increase the breakdown strength greatly due to the refined microstructure and the formation of the second phases. The estimated energy density of Ba0.5Sr0.5TiO3 ceramics with optimized Al2O3 additives is improved by 1.5 times as compared with that of pure Ba0.5Sr0.5TiO3 ceramics.

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Acknowledgements

This work was supported by the Ministry of Science and Technology of China through a 973-Project under Grant No. 2009CB623303, NSF of China (50737001, 50972068), NSF of Beijing 2092016 and Scientific Research Project of Tsinghua University No.2009THZ08063.

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Authors and Affiliations

  1. State Key Lab of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China

    Di Yi, Jiancong Yuan, Haiyang Liu, Yang Shen, Yuan-Hua Lin & Ce-Wen Nan

  2. Department of Electrical Engineering, Tsinghua University, Beijing, 100084, People’s Republic of China

    Xiao Xi & Jinliang He

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  1. Di Yi
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  2. Jiancong Yuan
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  3. Haiyang Liu
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  4. Yang Shen
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  5. Yuan-Hua Lin
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  6. Ce-Wen Nan
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  7. Xiao Xi
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  8. Jinliang He
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Correspondence to Yuan-Hua Lin.

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Yi, D., Yuan, J., Liu, H. et al. Influence of Al2O3 additive on the dielectric behavior and energy density of Ba0.5Sr0.5TiO3 ceramics. J Electroceram 29, 95–98 (2012). https://doi.org/10.1007/s10832-012-9752-1

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  • DOI: https://doi.org/10.1007/s10832-012-9752-1

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