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Decomposition behavior and dielectric properties of Ti-doped BiFeO3 ceramics derived from molten salt method

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Abstract

The effects of Ti-doping on the decomposition behavior, crystal structure, sintering behavior and dielectric properties have been investigated for the Ti-doped BiFeO3 ceramics derived from molten salt method. XRD reveals the almost pure phase BiFeO3 is synthesized in the Ti-doped BiFeO3 powders. And the particle size of Ti-doped BiFeO3 powers obviously decreases with the increase of Ti content. However, the sintering temperature elevates significantly after Ti-doping. The DC resistivity can enhance by up to four orders of magnitude (from 104 to 108 Ωm) with only 5 at% Ti doping. But the dielectric constant is suppressed from 104 to 102, and dielectric loss obviously reduces with a small amount of Ti doping. The variation of dielectric properties has been discussed from the decomposition of BiFeO3 phase. The Ti-doping can effectively suppress the decomposition reaction in Ti-doped BiFeO3 ceramics.

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Acknowledgments

This work was supported by Program for New Century Excellent Talents in University of Fujian Province (XSJRC2007-16) and Fuzhou University Science Foundation (2010-XQ-01).

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Authors and Affiliations

  1. College of Materials Science and Engineering, Fuzhou University, Fuzhou, People’s Republic of China

    X. H. Zheng, Z. H. Ma, P. J. Chen, D. P. Tang & N. Ma

  2. State Key Laboratory Breeding Base of Photocatalysis, Fuzhou University, 2 Xueyuan Road, University Town, Fuzhou, 350108, People’s Republic of China

    X. H. Zheng

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  1. X. H. Zheng
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  2. Z. H. Ma
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  4. D. P. Tang
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  5. N. Ma
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Correspondence to X. H. Zheng.

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Zheng, X.H., Ma, Z.H., Chen, P.J. et al. Decomposition behavior and dielectric properties of Ti-doped BiFeO3 ceramics derived from molten salt method. J Mater Sci: Mater Electron 23, 1533–1537 (2012). https://doi.org/10.1007/s10854-012-0624-x

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  • DOI: https://doi.org/10.1007/s10854-012-0624-x

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