Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
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Preparation of C-plane oriented BaFe12O19 film by electrospray deposition of colloidal precursor particles

정전분무 장치를 이용한 C축 일방향 바륨페라이트(BaFe12O19) 박막형성

  • Lee, Hye Moon (Functional materials division, Korea Institute of Materials and Science) ;
  • Kim, Yong Jin (Functional materials division, Korea Institute of Materials and Science)
  • 이혜문 (한국기계연구원 부설 재료연구소 기능재료연구본부) ;
  • 김용진 (한국기계연구원 부설 재료연구소 기능재료연구본부)
  • Received : 2010.02.09
  • Accepted : 2010.03.05
  • Published : 2010.03.30
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Abstract

New process consisting of electrospray and epitaxial crystal growth processes was applied to the preparation of c-plane oriented barium ferrite ($BaFe_{12}O_{19}$) thin film for high density magnetic recording media. Sodium citrate aided process was proper to preparation of amorphous $BaFe_{12}O_{19}$ nanoparticles with geometric mean diameter of 3 nm and geometric standard deviation of 1.1. The electrospray was applicable to the prepare of amorphous $BaFe_{12}O_{19}$ thin film on a substrate, and the film thickness could be controlled by adjusting the electrospray deposition time. The c-plane oriented $BaFe_{12}O_{19}$ thin film was successfully prepared by 3 step annealing process of the $BaFe_{12}O_{19}$ amorphous film on a sapphire($Al_2O_3$) substrate; annealing at $350^{\circ}C$ for 30 min, annealing at $500^{\circ}C$ for 30 min, and annealing at $700^{\circ}C$ for 60 min.

Keywords

References

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