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Microwave dielectric properties of a new A6B5O18-type cation deficient perovskites: Sr5LaTi2Nb3O18

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Abstract

A new A6B5O18-type cation deficient perovskite Sr5LaTi2Nb3O18 was prepared by the conventional solid-state reaction route. The phase, microstructure, and microwave dielectric properties of the ceramic were characterized. This compound crystallizes in the trigonal system with unit cell parameter a = 5.6101(2) Å, c = 40.922(8) Å, V = 1,115.4(5) Å3, and Z = 3. It shows a high dielectric constant of 48, a high quality factors with Q u × f of 27,806 GHz, and a small positive τ f of +19 ppm/°C.

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Acknowledgments

This work was financially supported by Natural Science Foundation of China (NSFC No. 20571059 and No. 50762002), and Program for New Century Excellent Talents in University (NCET-06-0656), Ministry of Education, China. This work was also sponsored by Guangxi Key Lab for the Advanced Materials and New Processing Technology (063006-5C-02) and Natural Science Foundation of Guangxi (No. 0832003Z).

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Authors and Affiliations

  1. Key Laboratory of Nonferrous Materials and New Processing Technology, Ministry of Education, Guilin University of Technology, Guilin, 541004, China

    Hui Zhang, Liang Fang, Heping Su & Xuemin Cui

  2. Guangxi Key Laboratory for Advance Materials and New Preparation Technology, Guangxi University, Nanning, 530004, China

    Hui Zhang, Liang Fang, Heping Su & Xuemin Cui

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  1. Hui Zhang
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  2. Liang Fang
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Correspondence to Liang Fang.

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Zhang, H., Fang, L., Su, H. et al. Microwave dielectric properties of a new A6B5O18-type cation deficient perovskites: Sr5LaTi2Nb3O18 . J Mater Sci: Mater Electron 20, 741–744 (2009). https://doi.org/10.1007/s10854-008-9796-9

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  • DOI: https://doi.org/10.1007/s10854-008-9796-9

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