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Effects of Nd-substitution on microstructures and dielectric characteristics of CaCu3Ti4O12 ceramics

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Abstract

Ca1−3x/2Nd x Cu3Ti4O12 (x = 0, 0.1, 0.2) ceramics were prepared by a solid state reaction process, and single-phased structures were obtained for all the compositions. The dielectric characteristics of pure and Nd-substituted CaCu3Ti4O12 ceramics were investigated together with the microstructures. The mixed-valent structures of Cu+/Cu2+ and Ti3+/Ti4+ in the present ceramics were confirmed by X-ray photoelectron analysis. The dielectric relaxation in the low temperature range was examined in detail and the variation of dielectric constant and dielectric loss was attributed to the modification mixed-valent structures.

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Acknowledgments

The present work was financially supported by National Science Foundation of China under grant numbers 50832005.

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  1. Lei Ni

    Present address: School of Materials Science and Engineering, Chang’an University, 710061, Xi’an, China

Authors and Affiliations

  1. Laboratory of Dielectric Materials, Department of Materials Science and Engineering, Zhejiang University, 310027, Hangzhou, China

    Ying Wang, Lei Ni & Xiang Ming Chen

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  1. Ying Wang
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  2. Lei Ni
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Correspondence to Xiang Ming Chen.

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Wang, Y., Ni, L. & Chen, X.M. Effects of Nd-substitution on microstructures and dielectric characteristics of CaCu3Ti4O12 ceramics. J Mater Sci: Mater Electron 22, 345–350 (2011). https://doi.org/10.1007/s10854-010-0140-9

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  • DOI: https://doi.org/10.1007/s10854-010-0140-9

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