| 용융염내에서의 Ba-ferrite 결정의 생성과정 및 그 자기적 특성 |
| 정지형, 김창곤, 윤석영, 신학기1, 김태옥 |
부산대학교 무기재료공학과
1경남정보대학 식품화공학부 |
| Formation Process of Barium Ferrite Crystallites in Molten Salts and its Magnetic properties |
|
|
|
|
|
|
|
| ABSTRACT |
|
In this study, formation process of Ba-ferrite by using molten salt synthesis and its magnetic properties were investigated. Among starting materials, BaC $O_3$was only soluble in the molten salts, but other starting material such as $delta$-FeOOH or F $e_2$ $O_3$was not soluble even at 105$0^{circ}C$. It implies that the dissolved $Ba^{2+}$ diffused on surfaces of F $e_2$ $O_3$(or $delta$-FeOOH), therefore, Ba-ferrtites were formed through surface reaction. However, the magnetic properties of Ba-ferrite prepared by two starting materials (F $e_2$ $O_3$and $delta$-FeOOH) were not different. On the other hand, compared $delta$-FeOOH with F $e_2$ $O_3$m, morphologies and dispersibility of Ba-ferrites prepared by using $delta$-FeOOH were good and Ba-ferrites were obtaioned at lower temperature. |
| Key words:
Molten salt synthesis, Ba-ferrite, Formation process, $\delta$-FeOOH, Hexaplatelets morphologies |
|
PDF Links
Full text via DOI 
Download Citation 
