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- 자기 조립법을 이용한 BaFe12O_19의 제조 및 자성 특성에 대한 연구
- 최문희, 유지훈, 김동환, 이혜문, 김수민, 김양도
- A Study on Magnetic Properties of BaFe12O_19 Fabricated by Self-assembly Method
- Moon-Hee Choi, Ji-Hun Yu, Dong-Hwan Kim, Hye-Mum Lee, Su-Min Kim, Yang-Do Kim
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Journal of Korean Powder Metallurgy Institute 2009;16(6):410-415
DOI: https://doi.org/10.4150/KPMI.2009.16.6.410
1부산대학교 재료공학과 에너지재료 실험실
2한국기계연구원 부설 재료연구소 분말재료연구부
3한국기계연구원 부설 재료연구소 분말재료연구부
4한국기계연구원 부설 재료연구소 분말재료연구부
5부산대학교 재료공학과 에너지재료 실험실
6부산대학교 재료공학과 에너지재료 실험실
1School of Materials Science and Engineering, Pusan National University
2Powder Technology Group, Korea Institute of Materials Science
3Powder Technology Group, Korea Institute of Materials Science
4Powder Technology Group, Korea Institute of Materials Science
5School of Materials Science and Engineering, Pusan National University
6School of Materials Science and Engineering, Pusan National University
2한국기계연구원 부설 재료연구소 분말재료연구부
3한국기계연구원 부설 재료연구소 분말재료연구부
4한국기계연구원 부설 재료연구소 분말재료연구부
5부산대학교 재료공학과 에너지재료 실험실
6부산대학교 재료공학과 에너지재료 실험실
1School of Materials Science and Engineering, Pusan National University
2Powder Technology Group, Korea Institute of Materials Science
3Powder Technology Group, Korea Institute of Materials Science
4Powder Technology Group, Korea Institute of Materials Science
5School of Materials Science and Engineering, Pusan National University
6School of Materials Science and Engineering, Pusan National University
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Abstract
Hexagonal barium ferrite (BaFe_12O_19) nano-particles have been successfully synthesised using selfassembly method. Diethyleneamine (DEA) surfactant was used to fabricate the micelle structure of Ba-DEA complex under various DEA concentrations. BaFe_12O_19 powders were synthesized with addition Fe ions to Ba-DEA complex and then heat treated at temperature range of 800-1000°C. The molar ratio of Ba/DEA and heat-treatment temperature significantly affected the magnetic properties and morphology of BaFe_12O_19 powders. BaFe_12O_19 powders synthesized with Ba/DEA molar ratio of 1 and heat-treated at 1000°C for 1 hour showed the coercive forces (iHc) of 4.84 kOe with average crystal size of about 200 nm.
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