The Effect of CuO and SiO2 on the Magnetic Properties of Sr-Ferrite

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J. Korean Ceram. Soc. > Volume 26(6); 1989 > Article

Journal of the Korean Ceramic Society 1989;26(6): 747.

CuO와 SiO2가 Sr-페라이트의 자기적 특성에 미치는 영향

김동식, 김동엽, 정원용¹, 오재현

연세대학교 금속공학과
¹한국과학기술원 금속연구부

The Effect of CuO and SiO2 on the Magnetic Properties of Sr-Ferrite

ABSTRACT

The effects of CuO and SiO2 on the sintered density, grain growth and magnetic properties of Sr-ferrite were investigated. The sintered density of Sr-ferrite is increased with increasing the amount of CuO or SiO2 addition. The grain of Sr-ferrite grow uniformly with the addition of CuO, so remanence increases and coercivity decreases. The addition of SiO2 increase coercivity but does not affect remanence prominently. The sintering temperature above 125$0^{circ}C$ and SiO2 addition above 0.8wt% causes abnormal grain growth in Sr-ferrite. When CuO and SiO2 are added simultaneouly, remanence does not decrease but coercivity shows low value.