TY - JOUR
T1 - Synthesis of Fe-filled carbon nanocapsules by an electric plasma discharge in an ultrasonic cavitation field of liquid ethanol
AU - Sergiienko, Ruslan
AU - Shibata, Etsuro
AU - Akase, Zentaro
AU - Suwa, Hiroyuki
AU - Shindo, Daisuke
AU - Nakamura, Takashi
PY - 2006/10/1
Y1 - 2006/10/1
N2 - Nanoparticles of iron carbides (Fe3C and X-Fe2.5C) wrapped in multilayered graphitic sheets were synthesized by a developed method in which an electric plasma was generated in an ultrasonic cavitation field containing thousands of tiny activated bubbles in liquid ethanol. Annealing changed the phase composition, structure, and size of the carbon nanocapsules as most of the iron carbides decomposed into the α-Fe phase and graphite. Powder samples annealed at 873 and 973 K have maximal saturation magnetization values equal to 80.6 and 83.4 A m2/kg, respectively, which is approximately 40% of the value of bulk iron. Using this method, it will be possible to synthesize nanoparticles of a metal of choice encapsulated by graphite shells by selecting appropriate materials for the ultrasonic tip and electrodes.
AB - Nanoparticles of iron carbides (Fe3C and X-Fe2.5C) wrapped in multilayered graphitic sheets were synthesized by a developed method in which an electric plasma was generated in an ultrasonic cavitation field containing thousands of tiny activated bubbles in liquid ethanol. Annealing changed the phase composition, structure, and size of the carbon nanocapsules as most of the iron carbides decomposed into the α-Fe phase and graphite. Powder samples annealed at 873 and 973 K have maximal saturation magnetization values equal to 80.6 and 83.4 A m2/kg, respectively, which is approximately 40% of the value of bulk iron. Using this method, it will be possible to synthesize nanoparticles of a metal of choice encapsulated by graphite shells by selecting appropriate materials for the ultrasonic tip and electrodes.
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U2 - 10.1557/jmr.2006.0316
DO - 10.1557/jmr.2006.0316
M3 - Article
AN - SCOPUS:33749838405
VL - 21
SP - 2524
EP - 2533
JO - Journal of Materials Research
JF - Journal of Materials Research
SN - 0884-2914
IS - 10
ER -