X-ray diffraction and magnetic susceptibility of sodium fullerides NaxC60

Mototada Kobayashi; Nozomu Kimata; Satoshi Heguri

doi:10.1016/j.jpcs.2009.12.067

X-ray diffraction and magnetic susceptibility of sodium fullerides Na_xC₆₀

Mototada Kobayashi, Nozomu Kimata, Satoshi Heguri

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

The X-ray diffraction (XRD), magnetic susceptibility and electron spin resonance (ESR) measurements have been carried out for Na_xC₆₀. 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 Na_xC₆₀ using SQUID was fitted to the Curie law, and estimated temperature-independent component χ₀. The composition x dependence of the χ₀ for Na_xC₆₀ 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 Na_xC₆₀ specimens with 8<x<9.

Original language	English
Pages (from-to)	689-691
Number of pages	3
Journal	Journal of Physics and Chemistry of Solids
Volume	71
Issue number	4
DOIs	https://doi.org/10.1016/j.jpcs.2009.12.067
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

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title = "X-ray diffraction and magnetic susceptibility of sodium fullerides NaxC60",

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",

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author = "Mototada Kobayashi and Nozomu Kimata and Satoshi Heguri",

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AU - Kobayashi, Mototada

AU - Kimata, Nozomu

AU - Heguri, Satoshi

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N2 - 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

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