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http://dx.doi.org/10.4283/JKMS.2005.15.3.172

Studying Carbon Coating on the Surface of Nano-sized Fe Particle by Mössbauer Analysis  

Oh, Sei-Jin (Department of Acoustics Eng. JuSeong College)
Choi, Chul-Jin (Materials Engineering Department, Korea Institute of Machinery & Materials)
Kim, Jin-Chun (Materials Engineering Department, Korea Institute of Machinery & Materials)
Kwon, Soon-Ju (Department of Materials Science and Engineering, Pohang University of Science and Technology)
Jin, Sang-Ho (Department of Materials Science and Engineering, Pohang University of Science and Technology)
Publication Information
Journal of the Korean Magnetics Society / v.15, no.3, 2005 , pp. 172-176 More about this Journal
Abstract
Four nano-sized Fe-nano particle samples synthesized by Chemical Vapor Condensation (CVC) were analyzed using $M\ddot{o}ssbauer$ spectroscopy, XRD, BET and TEM. The samples were consisted as functions of carrier gas and decomposition temperature. The synthesized nanoparticles consisted of two- or three-layers with the circular shape. The average particle size was increased with increasing the decomposition temperature. At $500^{\circ}C$ for the decomposition temperature, $Fe_3C$ was formed more under the environment of CO carrier gas than that of $CH_4$. However, at $1,100^{\circ}C$, almost of Fe-nano particles were transformed into $Fe_3C$ with using both carrier gas.
Keywords
Nano-sized Fe particle; Chemical Vapor Condensation; Mossbauer spectroscopy; Average particle size; Magnetic property;
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