비정질 Ba-Ferrite로부터 추출한 BaFe12O19 입자의 특성 |
김태옥, 오영우1, 박효열, 강원호2 |
부산대학교 무기재료공학과 1경남대학교 무기재료공학과 2삼성코닝(주) 연구소 |
Characteristics of BaFe12O19 Particles Extracted from Amorphous Ba-Ferrite |
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ABSTRACT |
Amorphous ferrites with composition B2O3-mBaO-nFe2O3 were prepared by an ultra rapidquenching technique. X-ray patterns and SEM reveal the products to be amrophous at room temperature. BaFe12O19 fine particles extracted from amorphous Ba-ferrites which additived Al2O3, SiO2, TiO2 and CoO have narrow size distribution, average 0.2$mutextrm{m}$, and coercive force, average 1400 Oe, increased with increasing TiO2 amounts. The obtained BeFe12O19 fine particles would be appreciated as perpendicular magnetic recording media. |
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