K3+δC84. Higher fullerene analogues of the A3C60 superconductors

M. S. Denning, T. J.S. Dennis, M. J. Rosseinsky*, H. Shinohara

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


Face-centered cubic phases of both the D2 and D2d isomers of the C84 anion with band fillings close to those of the A3C60 superconductors are prepared by a two-step reaction involving saturated K8+χC84 phases as intermediates. Rietveld refinement shows that the structures are more disordered than those of K8+χC84, with incomplete occupancy of multiple cation sites and the presence of two anion orientations, while both temperature-dependent powder diffraction and EPR demonstrate the monophasic nature of the reaction products. The temperature-independent magnetic susceptibilities and line width variation in EPR indicate that these phases have finite densities of states at the Fermi level for both C84 majority isomers, unlike the previously prepared saturated phases, but dc magnetization measurements indicate the absence of superconductivity above 5 K.

Original languageEnglish
Pages (from-to)4753-4759
Number of pages7
JournalChemistry of Materials
Issue number12
Publication statusPublished - 2001
Externally publishedYes


Dive into the research topics of 'K3+δC84. Higher fullerene analogues of the A3C60 superconductors'. Together they form a unique fingerprint.

Cite this