Structure and properties of alkali-doped C60

Katsumi Tanigaki

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

The structure of superconducting face-centered cubic (f.c.c.) M3C60 compounds has been precisely studied for binary alkali-metal-doped C60 molecules, where M is Na, K, Rb, Cs and their binary mixtures. Refinements of the observed X-ray diffraction patterns show that MS2MLC60 compounds are stable and preferentially ordered compared with the crystal phases for MSML2C60, which are very dependent on the alkali metals used, where MS denotes the smaller alkali metal and ML the larger metal. A new relationship between the superconducting transition temperature (Tc) and the f.c.c. lattice constant (a0) is demonstrated over a wide range of lattice parameters, using the binary alkali-metal-doped f.c.c. M3C60 superconductors. The new Tc-a0 relationship is compared with the previously reported pressure experiments and the prediction based on the simple Bardeen-Cooper-Schriefter theory.

Original languageEnglish
Pages (from-to)135-140
Number of pages6
JournalMaterials Science and Engineering B
Volume19
Issue number1-2
DOIs
Publication statusPublished - 1993 Apr 19
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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