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Influence of Dy-doping on ferroelectric and dielectric properties in Bi1.05−xDyxFeO3 ceramics

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Abstract

Bi1.05−xDyxFeO3 (BDFO) (x = 0−0.2) ceramics were synthesized by solid-state reaction method. The influence of Dy dopant on crystal structural, dielectric and ferroelectric properties was investigated. The lattice parameter and the Curie temperature of BDFO were degraded continuously with increasing contents of Dy3+ cations. Leakage current density, ferroelectric polarization and dielectric loss were improved by appropriate Dy doping. When x = 0.1, BDFO showed the best electric properties. At applied electric field of 53 kV/cm, the remnant polarization (2P r ) was 12.2 μC/cm2.These improvements in electric properties in BDFO ceramics could have resulted from the relatively low oxygen vacancy concentration and structural distortion.

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Acknowledgments

This work is supported by the National Natural Science Foundation of China under Grant No 60971008 and 60571009. Special thanks are due to Analytical and testing Center of Huazhong University of Science and Technology for the great assistance.

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Authors and Affiliations

  1. Department of Electronic Science and Technology, Huazhong University of Science and Technology, Wuhan, 430074, People’s Republic of China

    Yubin Li, Jun Yu, Jianjun Li, Chaodan Zheng, Yunyi Wu, Yuan Zhao, Meng Wang & Yunbo Wang

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  1. Yubin Li
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  2. Jun Yu
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  8. Yunbo Wang
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Correspondence to Yubin Li.

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Li, Y., Yu, J., Li, J. et al. Influence of Dy-doping on ferroelectric and dielectric properties in Bi1.05−xDyxFeO3 ceramics. J Mater Sci: Mater Electron 22, 323–327 (2011). https://doi.org/10.1007/s10854-010-0136-5

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