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http://dx.doi.org/10.4313/JKEM.2013.26.1.64

Fabrication and Properties of Fe3O4 Nanowires Using Pulsed Laser Deposition  

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)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.26, no.1, 2013 , pp. 64-67 More about this Journal
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.
Keywords
Magnetite; $Fe_3O_4$; Pulsed laser deposition; $Fe_3O_4$ nanowires;
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