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Cadmium substituted (Bi1.5ZnNb1.5)O7 dielectric ceramics

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Abstract

The effects of small amounts of Cd substitution for Zn in the low loss dielectric material Bi1.5ZnNb1.5O7 are reported. Solid solution of (Bi1.5Zn0.5-xCdx)(Zn0.5Nb1.5)O7 was formed in the present ceramics for x < 0.1, and β-Bi2O3 secondary phase appeared at x = 0.3. For x = 0.5, another phase Bi1.6Cd0.4O2.8 appeared gradually with increasing x. With increasing x, the dielectric constant increased firstly and reached their maximums 168 at 1 MHz, then decreased after x > 0.2. High-ɛ dielectric ceramics with low dielectric loss were created at the composition x = 0.2: ɛ = 168, \(\tan\delta=0.0001\) and αɛ =  − 554 ppm/° at 1 MHz.

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Acknowledgements

This work was supported by the Ministry of Science and Technology of China through 973-project (2002CB613302), China Postdoctoral Science Foundation (2005037018) and the Nature Science Project of education department of Shaanxi Province (04JK226).

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Authors and Affiliations

  1. Electronic Materials Research Laboratory, Xi’an Jiaotong University, Xi’an, 710049, China

    Huiling Du & Xi Yao

  2. Department of Materials Science & Engineering, Xi’an University of Science & Technology, Xi’an, 710054, China

    Huiling Du

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  1. Huiling Du
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  2. Xi Yao
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Correspondence to Huiling Du.

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Du, H., Yao, X. Cadmium substituted (Bi1.5ZnNb1.5)O7 dielectric ceramics. J Mater Sci 42, 979–982 (2007). https://doi.org/10.1007/s10853-006-0872-3

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  • DOI: https://doi.org/10.1007/s10853-006-0872-3

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