Journal of the Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회논문지)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Fabrication and Properties of Fe3O4 Nanowires Using Pulsed Laser Deposition

Pulsed Laser Deposition 방법으로 증착된 Fe3O4 나노선의 성장과 특성

  • Yun, Jong-Gu (Department of Materials Engineering, Chungnam National University) ;
  • Kim, Jin-A (Department of Materials Engineering, Chungnam National University) ;
  • Yoon, Soon-Gil (Department of Materials Engineering, Chungnam National University)
  • Received : 2012.11.07
  • Accepted : 2012.12.10
  • Published : 2013.01.01
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Abstract

$Fe_3O_4$(magnetite) having half metallic property attracts great attention material with high curie temperature in spintronics. $Fe_3O_4$ thin films and nanowires were grown onto c-$Al_2O_3$(0001) at various substrate temperatures. $Fe_3O_4$ films deposited from 300 to $600^{\circ}C$ are influenced by thermal stress induced from mismatch of thermal expansion coefficient between $Fe_3O_4$ and $Al_2O_3$ (0001) substrate. The $Fe_3O_4$ nanowires grown at $640^{\circ}C$ showed a diameter of 130 nm and a length of $2-10{\mu}m$. The nanowire arrays fabricated by pulsed laser deposition technique have high coercivity($H_c$) of 608 Oe and Squareness($M_r/M_s$) of 0.68 in perpendicular direction.

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References

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