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Effect of Zn substitution on the electromagnetic and microwave absorbing properties of BaCo2 hexaferrite

  • Ming Sun
  • Ji Zheng
  • Lu Liang
  • Kun Sun
  • Yangyang Song
  • Shuang Zhao
Article

Abstract

A series of Zn doped BaZnxCo2−xFe16O27 (x = 0, 0.3, 0.5, 0.7, 0.9, 1.2) W-type hexaferrites were successfully synthesized via chemical co-precipitation method. The XRD result showed that the structure of W-type hexaferrite has not been affected by the substitution of Zn. The morphology of the particles measured from SEM was the flat hexagonal sheet with large size about 15 μm and high aspect ratio of ~20. And the complex permittivity and permeability of BaZnxCo2−xFe16O27 which were determined by microwave vector network analyzer in the frequency of 1–18 GHZ was calculated based on the measured data. For the sample with x = 0.7, the minimum reflection loss of −52.8 dB was obtained at 12.8 GHz and the effective absorbing bandwidth reached 4.5 GHz for the sample with the thickness of 2.1 mm. At the thickness of 2.5 and 3.0 mm, the minimum reflection loss were −14.7 dB at 10.35 GHz and −13.2 dB at 8.1 GHz and the effective absorbing bandwidth were 4.93 and 2.21 GHz, respectively.

Keywords

Ferrite Complex Permittivity Reflection Loss Magnetic Loss High Dielectric Loss 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors acknowledge the contributions of members of our research group and collaborators on this microwave absorption program. This work was supported by the Department of Materials Science and Engineering of Tianjin University. Thanks the Beijing Institute of Aerial Materials for support.

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Copyright information

© Springer Science+Business Media New York 2015

Authors and Affiliations

  • Ming Sun
    • 1
  • Ji Zheng
    • 1
  • Lu Liang
    • 2
  • Kun Sun
    • 1
  • Yangyang Song
    • 1
  • Shuang Zhao
    • 1
    • 2
  1. 1.Department of Materials Science and Engineering, Tianjin Key Laboratory of Composite and Functional MaterialsTianjin UniversityTianjinChina
  2. 2.Beijing Institute of Aerial MaterialsChina Aviation Industry CorporationBeijingChina

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