The effect of Fe and Ru substitution on the superconductivity in MgCNi 3

T. Klimczuk, R. J. Cava

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

We report the effects of partial substitutions of the Villa elements: Fe (3d) and Ru (4d) in the intermetallic perovskite superconductor MgCNi 3. In both the MgCNi3 -xRux and MgCNi 3-xFex systems, the superconducting critical temperature (TC) decreases monotonically as x is increased. TC decreases more slowly in the case of Ru, suggesting that the 3d electrons in Fe are magnetically pair breaking. This is supported by the normal state magnetic susceptibility measurements (Χ), which shows that Χ increases with Fe and decreases with Ru doping. No ferromagnetism is observed in either system.

Original languageEnglish (US)
Pages (from-to)379-382
Number of pages4
JournalSolid State Communications
Volume132
Issue number6
DOIs
StatePublished - Nov 1 2004

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

Keywords

  • A. Alloys
  • D. Doping
  • D. Superconductivity

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