Studies on Hexagonal Ferrite (III) Coprecipitation-Method Preparation of Ferroxplana ZnY <TEX>$(Ba_2Zn_2Fe_{12}O_{22})$</TEX> and Its magnetic Properties

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J. Korean Ceram. Soc. > Volume 16(2); 1979 > Article

Journal of the Korean Ceramic Society 1979;16(2): 89.

Hexagonal Ferrite에 관한 연구 (III) 공침법에 의한 Ferroxplana ZnY $(Ba_2Zn_2Fe_{12}O_{22})$의 합성과 그 자성

김태옥, 신학기¹

부산대학교 공과대학
¹경남공업전문대학

Studies on Hexagonal Ferrite (III) Coprecipitation-Method Preparation of Ferroxplana ZnY $(Ba_2Zn_2Fe_{12}O_{22})$ and Its magnetic Properties

ABSTRACT

In order to prepare ferroxplana ZnY $(Ba_2Zn_2Fe_{12}O_{22})$, which would be useful for GHz-band communication, the optimum coprecipitation condition of 1 $BaCl_{2-1} Zn(NO_3)_2-6FeCl_3$ in $NaOH-Na_2CO_3$ solution was investigated by use of a new apparatus invented in our laboratory. By freeze-drying and calcining the coprecitated hydroxide-carbonate, the very reactive powder was obtained, from which the synthesis process of ZnY and the other related crystals were investigated by means of X-ray diffraction. In results, it was found that the reactive powder containing ZnY as the major component can be prepared by this method, which may be used in manufacturing the various magnetic cores for the microwave communication.