%0 Journal Article
%T Superconducting Fullerene Nanowhiskers
%A Hiroyuki Takeya
%A KunˇŻichi Miyazawa
%A Ryoei Kato
%A Takatsugu Wakahara
%A Toshinori Ozaki
%A Hiroyuki Okazaki
%A Takahide Yamaguchi
%A Yoshihiko Takano
%J Molecules
%D 2012
%I MDPI AG
%R 10.3390/molecules17054851
%X We synthesized superconducting fullerene nanowhiskers (C60NWs) by potassium (K) intercalation. They showed large superconducting volume fractions, as high as 80%. The superconducting transition temperature at 17 K was independent of the K content (x) in the range between 1.6 and 6.0 in K-doped C60 nanowhiskers (KxC60NWs), while the superconducting volume fractions changed with x. The highest shielding fraction of a full shielding volume was observed in the material of K3.3C60NW by heating at 200 ˇăC. On the other hand, that of a K-doped fullerene (K-C60) crystal was less than 1%. We report the superconducting behaviors of our newly synthesized KxC60NWs in comparison to those of KxC60 crystals, which show superconductivity at 19 K in K3C60. The lattice structures are also discussed, based on the x-ray diffraction (XRD) analyses.
%K fullerene nanowhisker
%K superconductor
%K potassium intercalation
%U http://www.mdpi.com/1420-3049/17/5/4851