(RbxK1-x)3C60 superconductors: Formation of a continuous series of solid solutions

Chia Chun Chen, Stephen P. Kelty, Charles M. Lieber

Research output: Contribution to journalArticle

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Abstract

By means of an approach that employs alkali-metal alloys, bulk single-phase (RbxK1-x)3C60 superconductors have been prepared for all x between 0 and 1. For x = 1 it is shown that the maximum superconducting fraction, which approaches 100% in sintered pellets, occurs at a Rb to C60 ratio of 3:1. More importantly, single-phase superconductors are formed at all intermediate values of x, and it is shown that the transition temperature (Tc) increases linearly with x in this series of materials. The formation of a continuous range of solid solutions demonstrates that the rubidium- and potassium-doped C60 superconducting phases must be isostructural, and furthermore, suggests that the linear increase in Tc with x results from a chemical pressure effect.

Original languageEnglish
Pages (from-to)886-888
Number of pages3
JournalScience
Volume253
Issue number5022
DOIs
Publication statusPublished - 1991 Aug 23

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Rubidium
Alkali Metals
Transition Temperature
Potassium
Pressure
Superconductivity

ASJC Scopus subject areas

  • General

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(RbxK1-x)3C60 superconductors : Formation of a continuous series of solid solutions. / Chen, Chia Chun; Kelty, Stephen P.; Lieber, Charles M.

In: Science, Vol. 253, No. 5022, 23.08.1991, p. 886-888.

Research output: Contribution to journalArticle

Chen, Chia Chun ; Kelty, Stephen P. ; Lieber, Charles M. / (RbxK1-x)3C60 superconductors : Formation of a continuous series of solid solutions. In: Science. 1991 ; Vol. 253, No. 5022. pp. 886-888.
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