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Co2Z hexaferrites with equivalent permeability and permittivity in UHF band

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Abstract

With the development of modern communication technology, all kinds of wireless communication devices are developing rapidly toward miniaturization, lightweight, and integration, which puts forward higher requirements for the size and volume of the antenna. In recent years, magneto-dielectric ferrite materials have been widely studied because of their good performance in magnetic and dielectric properties. In this work, a series of Ba1.5Sr1.5Co2−xFe24+xO41 (x = 0, 0.2, 0.4, 0.6) materials were successfully synthesized through the traditional solid-state reaction method. The influences of Fe substitution on the phase formation, microstructure, high-frequency dielectric, and magnetic properties were studied. It is found that, with the increase of substitution amount, the real permeability decreases from 8.8 to 4.2, and the real permittivity increases from 7.6 to 9.8. When the amount of substitution is relatively low (x = 0, 0.2), the real permeability and permittivity of the materials are almost equivalent at the frequency of 500 MHz to 1.0 GHz. The sample of x = 0.2 with permeability (7.1 to 8.2) and permittivity (7.8), and low losses (tanδµ ≤ 0.22, tanδε ≤ 0.02) could be used for antenna miniaturization in UHF band in the future.

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Some or all data, models, or code that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgements

This work was supported by the Sichuan Science and Technology Program (Grant No. 2021JDTD0026), Jiangxi Innovative Talent Program, Guizhou Basic (Grant No. 2021305), and Jiangxi Guochuang & UESTC Joint R & D Center Program (Grant No. H04W190371).

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Authors and Affiliations

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China, Chengdu, 610054, China

    Qinhua Li, Yuanxun Li, Rui Peng, Yongcheng Lu, Fuyu Li & Qiye Wen

  2. Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, China

    Yuanxun Li

  3. Guizhou Zhenhua Electronic Information Ltd., Guiyang, 553000, China

    Sheng Li

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  1. Qinhua Li
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Li, Q., Li, Y., Li, S. et al. Co2Z hexaferrites with equivalent permeability and permittivity in UHF band. J Mater Sci: Mater Electron 33, 8226–8232 (2022). https://doi.org/10.1007/s10854-022-07973-9

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