대한전기학회:학술대회논문집 (Proceedings of the KIEE Conference)

대한전기학회 (The Korean Institute of Electrical Engineers)
권호 표지

1,2차 첨가제가 이방성 $SrO-5.7Fe_2O_3$의 자기적 특성에 미치는 효과

A Study on the Effects of first and second additives Magnetic Characteristics of Anisotropic $SrO-5.7Fe_2O_3$.

  • 송준태 (성균관대학교 공과대학 전기공학과) ;
  • 신용덕 (성균관대학교 공과대학 전기공학과) ;
  • 정인영 (성균관대학교 공과대학 전기공학과) ;
  • 진홍범 (성균관대학교 공과대학 전기공학과)
  • Song, Joon-Tae (The Depart.of Electrical Engineering Sung Kyun Kwan Univ.) ;
  • Shin, Yeong-Duck (The Depart.of Electrical Engineering Sung Kyun Kwan Univ.) ;
  • Jeong, In-Young (The Depart.of Electrical Engineering Sung Kyun Kwan Univ.) ;
  • Jin, Hong-Bum (The Depart.of Electrical Engineering Sung Kyun Kwan Univ.)
  • 발행 : 1990.07.05
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초록

The effect of $CaCo_3$, $SrCo_3$, $SiO_2$ and $H_3BO_3$ in the range of 0.1-1.0 wt% on strontium ferrites consisting of the magnetoplumbite phase $SrO-5.7Fe_2O_3$ were investigated. The hysteresis loop, density, demagnetization curve and the intrinsic coercive force were measured on anisotropic ferrite. The particle diameter and 0.5(wt%) of second additive $CaCo_3$ is particularly important for the properties of anisotropic ferrite. When the particle diameter is decreased from 1.98(${\mu}m$) to 1.07(${\mu}m$), the remance is increased from 2900 to 4010(G) and the coercive force from 2150 to 2850(Oe) at a sintering temperature 1230 ($^{\circ}C$). Remance Br(G), coercleve force(Oe) and maximum energy product of sample A-16 are87(%), 56(%), 67(%) of S-W model theoretical value.

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