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Oral presentation

Characterization of La fullerene soot and formation of LaC$$_{2}$$ containing multi-shell carbon nanocapsules by heat treatment

Yamamoto, Kazunori; Akasaka, Takeshi*

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La fullelene soot prepared by a conventional DC arc discharge method at low He pressure (15, 20, 35, 45 Torr) have been characterized, then used as precursors of LaC2 containing multi-shell carbon nanocapsules by our heat treatment method. The soot materials have been treated at temperatures between 1000 and 2200$$^{circ}$$C in vacuum. The soot matrrials have been characterized by TEM and thermogravimetric (TG) analysis. Multi-shell single-digit nanoparticles filled with La have been found in La fullerene arc soot synthesized at 35 and 45 Torr He, which is lower than the ordinal pressure for the fullerene and nanotube condition. On the other hand the nanoparticles have not been found in La fullerene arc soot synthesized at 15 Torr He.

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