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Electromagnetic properties and microwave absorbing behavior of(Zn_(0.3)Co_(0.7))_2-W type barium ferrites

Qitu Zhang

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Abstract

Ba(Zn0.3Co0.7)2Fe16O27 hexaferrite sample was prepared by the sol-gel method.The microstructure,electromagnetic properties and microwave absorbing behavior of the samples were characterized by XRD,SEM and network analyzer(Agilent 8722ET).It is found that the single phase of Ba(Zn0.3Co0.7)2Fe16O27 is formed at 1 250 ℃.The dielectric loss peak exhibits at 14 GHz,and magnetic loss appears at wide frequency range of 8～12 GHz and 15～17 GHz.The maximum reflection loss(RL) reaches about –23 dB at 15.3 GHz and RL is below –10 dB in the frequency range of 9～18 GHz when the thickness of microwave absorbing coating is 1.85 mm.Evidently,this ferrite has excellent microwave absorbing behavior.

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What this paper is about

Ba(Zn0.3Co0.7)2Fe16O27 hexaferrite sample was prepared by the sol-gel method.The microstructure,electromagnetic properties and microwave absorbing behavior of the samples were characterized by XRD,SEM and network analyzer(Agilent 8722ET).It is found that the single phase of Ba(Zn0.3Co0.7)2Fe16O27 is formed at 1 250 ℃.The dielectric loss peak exhibits at 14 GHz,and magnetic loss appears at wide frequency range of 8～12 GHz and 15～17 GHz.The maximum reflection loss(RL) reaches about –23 dB at 15.3 GHz and RL is below –10 dB in the frequency range of 9～18 GHz when the thickness of microwave absorbing coating is 1.85 mm.Evidently,this ferrite has excellent microwave absorbing behavior.

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Available abstract

Ba(Zn0.3Co0.7)2Fe16O27 hexaferrite sample was prepared by the sol-gel method.The microstructure,electromagnetic properties and microwave absorbing behavior of the samples were characterized by XRD,SEM and network analyzer(Agilent 8722ET).It is found that the single phase of Ba(Zn0.3Co0.7)2Fe16O27 is formed at 1 250 ℃.The dielectric loss peak exhibits at 14 GHz,and magnetic loss appears at wide frequency range of 8～12 GHz and 15～17 GHz.The maximum reflection loss(RL) reaches about –23 dB at 15.3 GHz and RL is below –10 dB in the frequency range of 9～18 GHz when the thickness of microwave absorbing coating is 1.85 mm.Evidently,this ferrite has excellent microwave absorbing behavior.

Key concepts: Materials science, Reflection loss, Microwave, Barium ferrite, Ferrite (magnet), Barium, Microstructure, Network analyzer (electrical)

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Electromagnetic properties and microwave absorbing behavior of(Zn_(0.3)Co_(0.7))_2-W type barium ferrites — Research Paper | ScholarLens