Preparation of Ultrafine Mn-Zn Ferrite by Direct-Wet Synthesis and a Study of Magnetic Properties

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J. Korean Ceram. Soc. > Volume 28(10); 1991 > Article

Journal of the Korean Ceramic Society 1991;28(10): 757.

습식직접 합성에 의한 초미분 Mn-Zn Ferrite의 합성과 자성특성에 관한 연구

이경희, 이병하, 허원도¹, 황우연¹

명지대학교 공과대학 무기재료과
¹삼화전자공업주식회사

Preparation of Ultrafine Mn-Zn Ferrite by Direct-Wet Synthesis and a Study of Magnetic Properties

ABSTRACT

These powder properties were investigated and prepared of ultrafine Mn-Zn ferrite powder by Direct-wet process from variation of oxidation condition. H2O2 oxidation the products were ultrafine spherical particles of about 400${AA}$ in diameter and superparamagnetics. H2O2 and Air oxidation, Coexistance ultrafine spherical particles of about 400${AA}$ and cubic particles of about 1000${AA}$. The products were constructed of superparamagnetic and ferromagnetic particles, and Magnetization were about 30 emu/g. Air Oxidation, Above 6 hr Air 120 ι/hr and 4 hr of Air 180 ι/hr were uniform cubic particles of above 1000${AA}$. The products were ferromagnetic particles and Magnetization of above 45 emu/g.