| 졸-겔법에 의한 Cobalt 치환된 Ba-ferrite 분말의 자기적 특성 |
| 최현승, 박효열1, 윤석영, 신학기2, 김태옥 |
부산대학교 무기재료공학과
1한국전기연구원
2경남정보대학 식품화공학부 |
| Magnetic Properties of Co-substituted Ba-ferrite Powder by Sol-gel Method |
| Hyun-Seung Choi, Hyo-Yul Park1, Seog-Young Yoon, Hak-Gi Shin2, Tae-Ok Kim |
School of Materials Science and Engineering, Pusan National University
1Korea Electrotechnology Research Institute
2Devision of Food Chemicla Engineering, Kyungnam Colloge of Information and Technology |
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| ABSTRACT |
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In this study, nano-sized Si-C-N precursor powders were synthesized by Chemical Vapor Condensation Method(CVC) using TMS(Tetramethylsilane: $Si(CH_3)_4$), $NH_3$ and $H_2$ gases under the various reaction conditions of the reaction temperature, TMS/$NH_3$ ratio and TMS/$H_2$ ratio. XRD and FESEM were used to analysis the crystalline phase and the average particle size of the synthesized powders. It was found that the obtained powders under the considering conditions were all spherical amorphous powder with the particle size of 87∼130 nm. The particle size was decreased as the reaction temperature increased and TMS/$NH_3$ and TMS/$H_2$ ratio decreased. As the results of EA analysis, it was found that the synthesized powders had been formed the powders composed of Si, N, C and H. Through FT-IR results, it was found that the synthesized powders were Si-C-N precursor powders with Si-C, Si-N and C-N bonds. |
| Key words:
Sol-gel method, Saturation magnetization($M_S$), Coercivity($H_C$) |
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