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J. Korean Ceram. Soc. > Volume 30(3); 1993 > Article
Journal of the Korean Ceramic Society 1993;30(3): 236.
유리결정화에 의한 Ferroxplana $Ba_2Co_2Fe_{12}O_{22}$ 미세 단결정의 제조
김성재, 김동호, 이재동, 김태옥
부산대학교 공과대학 무기재료공학과
Preparation of Fine Single-Crystalline Particles of Ferroxplana, $Ba_2Co_2Fe_{12}O_{22}$ from Crystallization of Glass
As the fundamental research on preparation of fine single crystalline ferroxaplana by means of glass-crystallization methods using steel twin-roller, the properties of ferroxplana crystallized from glass were studied. Most of the specimens quenched by twin-roller at about 130$0^{circ}C$ were glass phase, the crystallization of these glasses underwent multi-steps and ferroxplana phase was only stable in the temperature range of 88$0^{circ}C$ to 95$0^{circ}C$. Above 95$0^{circ}C$ ferroxplana begines to be decomposed in glass. Ferroxplana had such magnetic properties as M8=29emu/g, MHC=166Oe, and Curie Temperature, Tc=610$pm$5K.
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