Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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Physical Properties of Polycrystalline Mn2O3-Substituted LiNiBi Ferrite

Mn2O3가 LiNiBi Ferrite의 물리적 특성에 미치는 영향

  • Koh Sae Gui (Department of Physics, Soongsil University)
  • 고재귀 (숭실대학교 자연과학대학 물리학과)
  • Published : 2004.09.01
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Abstract

Lithium ferrites are a low-cost material which have been prominent in the high frequency core industry because of their excellent temperature performance and high squareness ratio. In order to develope the lithium ferrites with the high squareness and low coercive force, the ferrites of $Li_{0.48}Bi_{0.02}Ni_{0.04}Fe_{2.46-x}O_4$ were investigated the by varying composition, temperature and frequency. Electric loss of the Li-ferrite was lowered with the substitution of $Mn_{2}O_3$. The addition of $Mn_{2}O_3$ increased the magnetic induction (Bm&Br) but decreased the coercive force (Hc) and the squareness ratio (R=Br/Bm). Also, the Br value was stable at environmental temperature variation.

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References

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