Synthesis, structure, and superconducting properties of NbC nanorods and nanoparticles

Akihiko Fukunaga*, Shaoyan Chu, Michael E. McHenry, Michihiko Nagumo

*この研究の対応する著者

研究成果: Article査読

5 被引用数 (Scopus)

抄録

NbC nanorods and nanoparticles have been synthesized using a vapor-solid reaction path starting with carbon nanotube precursors. Their structures are studied using XRD, TEM, and HRSEM. Their superconducting properties of nanoparticles were also characterized using a SQUID magnetometer. For reactions at lower temperatures, NbC nanorods (10 - 20 nm) which replicate the precursor carbon nanotubes are observed. For reactions at higher temperature, coarsened NbC nanoparticles (100 - 500 nm) are observed which have spherical or faceted morphologies. A morphological Rayleigh instability can be applied as initiating the transition from NbC nanorod to nanoparticle morphologies. NbC nanoparticles with a little larger lattice parameter show a higher Tc than stoichiometric bulk NbC.

本文言語English
ページ(範囲)118-122
ページ数5
ジャーナルMaterials Transactions, JIM
40
2
DOI
出版ステータスPublished - 1999
外部発表はい

ASJC Scopus subject areas

  • 工学(全般)

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