Lattice parameters of alkali-metal-doped C60 fullerides

✍ Scribed by K. Tanigaki; I. Hirosawa; J. Mizuki; T.W. Ebbesen

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 520 KB
• Volume: 213
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(93)85152-e

✦ Synopsis

Lattice constants of alkali-metal-doped A$& fullerides with face-centered cubic crystal structure are reported for a wide range of lattice parameters, using Li, Na, K, Rb, Cs and their binary mixtures. It is shown that the size of the alkali-metal cations in the tetrahedral interstitial sites controls the lattice parameters. The observed lattice parameters are discussed in comparison with other body-centered cubic A&,, and rock salt type A&,,, phases. The field repulsive interactions among the Css molecules other than the electrostatic Madelung energy must be taken into account to understand the lattice parameters of A,&, in the small lattice parameter region, different from standard alkali-halide ionic crystals.