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Enhanced Microwave Absorbing Properties of La3+ Substituting Barium Hexaferrite

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Abstract

Barium hexagonal ferrites doped with La3+, Ba1−x La x CoTiFe10O19 (x = 0.10, 0.15, 0.20), were prepared by sol-gel combustion method. The structure, magnetic properties, and microwave absorption of the samples were investigated. The X-ray diffraction patterns of the doped ferrites confirmed the formation of the M-type barium ferrite, and no other impurities could be found. The electromagnetic parameter spectra showed that The La3+ ions doped in the ferrite improved complex permittivity and permeability so that microwave absorption was enhanced. The minimum reflection loss of −39.15 dB was obtained for sample x = 0.20 with thickness of 2.4 mm, and the maximum bandwidth of RL <−10 dB can reach to 11.5 GHz when the thickness is 2.0 mm.

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Authors and Affiliations

  1. Department of Modern Manufacturing, Yibin Vocational and Technical College, Yibin, 644003, China

    Yankui Cheng

  2. State Key Laboratory of Solidification Processing, School of Materials Science and Engineering, Northwestern Polytechnical University, Xi’an, 710072, China

    Xiaohu Ren

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  1. Yankui Cheng
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  2. Xiaohu Ren
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Correspondence to Xiaohu Ren.

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Cheng, Y., Ren, X. Enhanced Microwave Absorbing Properties of La3+ Substituting Barium Hexaferrite. J Supercond Nov Magn 29, 803–808 (2016). https://doi.org/10.1007/s10948-015-3355-4

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  • DOI: https://doi.org/10.1007/s10948-015-3355-4

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