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Effect of preparation method on microwave dielectric properties of 0.7CaTiO3–0.3SmAlO3 ceramic

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Abstract

0.7CaTiO3–0.3SmAlO3 (CTSA) ceramics were prepared from CaTiO3 and SmAlO3, CaTiO3 were prepared by conventional solid-state reaction method and SmAlO3 were prepared by co-precipitation method. As expected, the sintering temperature of CTSA ceramics was reduced and the dielectric properties were improved when the SmAlO3 were prepared by co-precipitation. As the sintering temperature increased, the Q × f values were sharply increased and then decreased. The CTSA ceramics had low sintering temperature of 1410 °C and stable τ f value. Microwave dielectric properties of CTSA ceramics were: ε r  = 44.95, Q × f = 50,137 GHz, τ f  = +7.6 ppm/°C, and the SmAlO3 powers were calcined at 900 °C for 3 h.

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Acknowledgments

This work was supported by the Priority Academic Program Development of Jiangsu Higher Education Institutions and Program for Chang Jiang Scholars and Innovative Research Team in University (PCSIRT), IRT1146.

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Authors and Affiliations

  1. College of Materials Science and Engineering, Nanjing Tech University, No. 5 Xinmofan Road, Nanjing, 210009, China

    Zhonghua Qin, Yafei Huang, Chunying Shen & Mingliang Tang

  2. Donghai Advanced Silicon-Based Materials Institute, Nanjing Tech University, Donghai, 222300, China

    Mingliang Tang

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  1. Zhonghua Qin
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  2. Yafei Huang
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  3. Chunying Shen
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  4. Mingliang Tang
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Correspondence to Chunying Shen.

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Qin, Z., Huang, Y., Shen, C. et al. Effect of preparation method on microwave dielectric properties of 0.7CaTiO3–0.3SmAlO3 ceramic. J Mater Sci: Mater Electron 27, 4157–4162 (2016). https://doi.org/10.1007/s10854-016-4277-z

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  • DOI: https://doi.org/10.1007/s10854-016-4277-z

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