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Enhanced Microwave Absorption Property of Ho–Ce–Co Alloy

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

In this study, HoxCe2–xCo17 (x = 0, 0.2, 0.6, 1.0) powders were fabricated by melting and ball milling successfully. The influence of Ho content on phase structure, morphology, electromagnetic parameters and microwave absorbing property is examined by relevant equipment. The consequences revealed that the addition of Ho content has no effects on the main phase Ce2Co17 and there is a decrease in particle size. As a whole, the minimum absorption peak frequency shifts to a lower frequency with increasing Ho content. The minimum reflection loss (RL) value of Ho0.6Ce1.4Co17 can reach –42.99 dB at 6.48 GHz with the thickness of 2.0 mm and the bandwidth of RL < –10 dB achieve 1.6 GHz. With the different thicknesses of 1.5 to 3.5 mm, the minimum RL value of Ho0.6Ce1.4Co17 powder is less than –15 dB in the whole C-band (4–8 GHz), and the Ho0.6Ce1.4Co17 powder can achieve the minimum RL of –12.74 dB at 3.6 GHz with the thickness of 3.5 mm in the S-band (2–4 GHz). These results indicate that the Ho–Ce–Co alloy has better potential to be applied in broadband and low frequency with better absorbing properties.

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Funding

Project was supported by the National Natural Science Foundation of China (51361007), 2017 director fund of Guangxi Key Laboratory of Wireless Wideband Communication and Signal Processing (GXKL06170107), Guangxi Key Laboratory of Information Materials (161010-Z) and Innovation Project of GUET Graduate Education (2018YJCX87).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Guilin University of Electronic Technology, 541004, Guilin, China

    Y. He, S. K. Pan, J. L. Luo, Y. Q. Xu, J. J. Yu & K. T. Huang

  2. School of Materials and Engineering, Central South University, 410083, Changsha, China

    L. C. Cheng

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  1. Y. He
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  2. S. K. Pan
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  3. L. C. Cheng
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  4. J. L. Luo
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  5. Y. Q. Xu
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  6. J. J. Yu
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  7. K. T. Huang
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Correspondence to Y. He.

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He, Y., Pan, S.K., Cheng, L.C. et al. Enhanced Microwave Absorption Property of Ho–Ce–Co Alloy. Phys. Metals Metallogr. 121, 217–222 (2020). https://doi.org/10.1134/S0031918X20020088

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  • DOI: https://doi.org/10.1134/S0031918X20020088

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