Synthesis of Mn-Zn Ferrite by Alcoholic Dehydration

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J. Korean Ceram. Soc. > Volume 32(8); 1995 > Article

Journal of the Korean Ceramic Society 1995;32(8): 922.

알콜 탈수법에 의한 Mn-Zn Ferrite의 분체합성

이대희, 신효순, 이병교

경북대학교 무기재료공학과

Synthesis of Mn-Zn Ferrite by Alcoholic Dehydration

ABSTRACT

The effects of citrate/formate solution concentration and calcining temperature on Mn-Zn ferrite powder characteristics in the alcoholic dehydraton method were investigated. In the whole solution concentrations, agglomerates of fine particles (<0.3 ${mu}{textrm}{m}$) were obtained after calcining at 90$0^{circ}C$. Both primary particle size and the compositional shift of calcined powders decreased with increasing citrate/formate solution concentration. Reaction sequence of the precipitates prepared with 0.4M citrate/formate solution conjectured, (ZnFe2O4＋$alpha$-Fe2O3)$600^{circ}C$longrightarrow((Mn, Zn)Fe2O4＋$alpha$-Fe2O3)80$0^{circ}C$longrightarrow((Mn, Zn)Fe2O4)120$0^{circ}C$

Key words: Alcoholic dehydration, Co-precipitation, Agglomeration, Reaction sequence