Electrical & Electronic Materials (E2M - 전기 전자와 첨단 소재)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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A study on the electromagnetic wave absorption properties and microstructure by the composition ratio of Ni-Zn ferrite

Ni-Zn페라이트의 조성비에 따른 전자파 흡수특성과 미세구조에 관한 연구

  • 조재원 (명지대학교 전자공학과) ;
  • 진성빈 (명지대학교 전자공학과) ;
  • 문형욱 (명지대학교 전자공학과) ;
  • 신용진 (명지대학교 전자공학과)
  • Published : 1995.11.01
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Abstract

This paper describes a study on absorption properties of electromagnetic wave by the composition ratio of Ni-Zn ferrite. Ni-Zn ferrite was composed of 48-52mol% Fe$\_$2/O$\_$3/, 18-22mol% NiO and 26-34mol% ZnO. The sintering of the composition was carried out at 1200.deg. C for 2 hours. Through the experiments, it was found that the resonance phenomenon occured at low frequency range for high permeability and vice versa. In the case of the composition of 49mol% Fe$\_$2/O$\_$3/, 20mol% NiO and 31mol% ZnO, the bandwidth ranged from 0.35GHz to 0.95GHz with the absorption thickness of 10mm. Also, in the case of the composition 51mol% Fe$\_$2/O$\_$3/, 22mol% NiO and 27mol% ZnO, the bandwidth ranged from 0.48GHz to 1.2GHz with the absorption thickness of 6mm.

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