Effect of Ru substitution for Ni on the superconductivity in MgCNi 3-xRux

T. Klimczuk, V. Gupta, G. Lawes, A. P. Ramirez, R. J. Cava

Research output: Contribution to journalArticle

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Abstract

The superconductor MgCNi3 has been chemically doped by partial substitution of Ru for Ni in the solid solution MgCNi3-xRu x for 0<x<0.5. Magnetic and specific heat measurements show that the Sommerfeld parameter (γexp) and TC decrease immediately on Ru substitution, but that a TC above 2 K is maintained even for a relatively large decrease in γexp. Ferromagnetism is not observed to develop through Ru substitution, and the normal state magnetic susceptibility is suppressed.

Original languageEnglish (US)
Pages (from-to)094511-1-094511-6
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume70
Issue number9
DOIs
StatePublished - Sep 1 2004

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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