Abstract
We synthesized superconducting fullerene nanowhiskers (C 60NWs) 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 C 60 nanowhiskers (K xC 60NWs), while the superconducting volume fractions changed with x. The highest shielding fraction of a full shielding volume was observed in the material of K 3.3C 60NW by heating at 200 °C. On the other hand, that of a K-doped fullerene (K-C 60) crystal was less than 1%. We report the superconducting behaviors of our newly synthesized K xC 60NWs in comparison to those of K xC 60 crystals, which show superconductivity at 19 K in K 3C 60. The lattice structures are also discussed, based on the x-ray diffraction (XRD) analyses.
Original language | English |
---|---|
Pages (from-to) | 4851-4859 |
Number of pages | 9 |
Journal | Molecules |
Volume | 17 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2012 May |
Keywords
- Fullerene nanowhisker
- Potassium intercalation
- Superconductor
ASJC Scopus subject areas
- Analytical Chemistry
- Chemistry (miscellaneous)
- Molecular Medicine
- Pharmaceutical Science
- Drug Discovery
- Physical and Theoretical Chemistry
- Organic Chemistry