Characterization of a Y-type hexagonal ferrite-based frequency tunable microwave absorber

Fang Xu, Yang Bai, Kai Jiang, Li-jie Qiao

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    Cite this article as:

    Fang Xu, Yang Bai, Kai Jiang, and Li-jie Qiao, Characterization of a Y-type hexagonal ferrite-based frequency tunable microwave absorber, Int. J. Miner. Metall. Mater., 19(2012), No. 5, pp.453-456. https://dx.doi.org/10.1007/s12613-012-0578-2
    Fang Xu, Yang Bai, Kai Jiang, and Li-jie Qiao, Characterization of a Y-type hexagonal ferrite-based frequency tunable microwave absorber, Int. J. Miner. Metall. Mater., 19(2012), No. 5, pp.453-456. https://dx.doi.org/10.1007/s12613-012-0578-2
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    Characterization of a Y-type hexagonal ferrite-based frequency tunable microwave absorber

    基金项目: 

    This work was financially supported by the National Natural Science Foundation of China (No.50702005) and the Natural Science Foundation of the Education Department of Henan Province, China (No.2010A430012).

      通信作者:

      Fang Xu E-mail: fangx_d@126.com

    A Y-type hexaferrite rod with the composition of Ba2Co1.8Cu0.2Fe12O22 was presented as an absorbing material with high absorbance. Its high absorbance and wide absorption band result from ferromagnetic resonance (FMR) that is self-biased by strong shape and magnetocrystalline anisotropy fields. Around the FMR frequency the specimen of the ferrite rods exhibits very high absorbance and the FMR frequency can be tuned by the rod dimension. In addition to the high absorbance and the wide tunable absorption band, the microwave absorber has another advantage of light weight due to the use of the ferrite rods instead of ferrite slabs.

     

    Characterization of a Y-type hexagonal ferrite-based frequency tunable microwave absorber

    Author Affilications
    • Funds: 

      This work was financially supported by the National Natural Science Foundation of China (No.50702005) and the Natural Science Foundation of the Education Department of Henan Province, China (No.2010A430012).

    • Received: 03 July 2011; Revised: 15 August 2011; Accepted: 30 August 2011;
    A Y-type hexaferrite rod with the composition of Ba2Co1.8Cu0.2Fe12O22 was presented as an absorbing material with high absorbance. Its high absorbance and wide absorption band result from ferromagnetic resonance (FMR) that is self-biased by strong shape and magnetocrystalline anisotropy fields. Around the FMR frequency the specimen of the ferrite rods exhibits very high absorbance and the FMR frequency can be tuned by the rod dimension. In addition to the high absorbance and the wide tunable absorption band, the microwave absorber has another advantage of light weight due to the use of the ferrite rods instead of ferrite slabs.

     

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