Abstract
The X-ray diffraction (XRD), magnetic susceptibility and electron spin resonance (ESR) measurements have been carried out for NaxC60. The XRD profiles with x<4 can be assigned to a face-centered cubic (fcc) lattice, while those with 4≦x to a hexagonal one. The temperature dependence of magnetic susceptibility χ for NaxC60 using SQUID was fitted to the Curie law, and estimated temperature-independent component χ0. The composition x dependence of the χ0 for NaxC60 shows two maxima at around x=3 and x=10, and minimum at x=6. The absence of Pauli contribution at x=6 was confirmed using ESR. A trace of superconducting transition at 14 K has been found for some NaxC60 specimens with 8<x<9.
Original language | English |
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Pages (from-to) | 689-691 |
Number of pages | 3 |
Journal | Journal of Physics and Chemistry of Solids |
Volume | 71 |
Issue number | 4 |
DOIs | |
Publication status | Published - 2010 Apr 1 |
Keywords
- A. Fullerenes
- B. Chemical synthesis
- D. Crystal structure
- Magnetic properties
- Superconductivity
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics