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Microwave Absorbing Performance on Polymer-Derived SiCN Ceramics Doped with Rare Earth Oxides

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Abstract

This study investigated the compositions, dielectric properties, magnetic properties and microwave absorbing properties of polymer-derived SiCN ceramics doped with Dy2O3, Eu2O3, Sm2O3, Y2O3 and Gd2O3 respectively. The complex permittivity and complex permeability were measured at the frequency range of 2–18 GHz. The reflectivity of polymer-derived SiCN ceramics doped with Eu2O3 reaches to the lowest value of −35 dB at 16.4 GHz. While the electromagnetic damping coefficient reaches the maximum value of 653 at 16.1 GHz, which clearly demonstrates that by doping Eu2O3 the wave absorbing performance of polymer-derived SiCN can be enhanced more pointedly than the other samples.

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Acknowledgements

The authors would like to extend their sincere appreciation to the Deanship of The National Nature Science Foundation of China (No. 51572154) and Natural Science Foundation of Shandong Province (2015ZRE27348) for its funding.

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Correspondence to Hongyu Gong or Yujun Zhang .

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Liu, Y. et al. (2018). Microwave Absorbing Performance on Polymer-Derived SiCN Ceramics Doped with Rare Earth Oxides. In: Han, Y. (eds) Advanced Functional Materials. CMC 2017. Springer, Singapore. https://doi.org/10.1007/978-981-13-0110-0_11

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