Coexistence of superconductivity and ferromagnetism in 1212-Ru1 - xMxSr2GdCu2O8 (M = Ti, V, Nb)

Sylvie Malo, Donggeun Ko, Job T. Rijssenbeek, Antoine Maignan, Denis Pelloquin, Vinayak P. Dravid, Kenneth R. Poeppelmeier

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15 Citations (Scopus)

Abstract

The coexistence of superconductivity and ferromagnetism in 1212-RuSr2GdCu2O8 is unique among high-Tc materials. Samples of Ru1 - xMxSr2GdCu2O8, with M = Ti, V and Nb; and 0≤x≤1, were prepared to elucidate the role of the RuO2 planes in this interesting layered 1212 cuprate. The solubility ranges of M = Ti and V are limited to x<0.15 whereas that of Nb extends to full substitution. In all cases superconductivity is lost at higher substitution levels (x>0.2), however with vanadium substitution the Tc increases from 20 K to 25 K. The ferromagnetism of the RuO2 layers is dramatically affected by the electronic configuration of the substituting ion, weakened for M = Ti and Nb and enhanced for M = V. These results indicate that the superconductivity and ferromagnetism are intimately linked to the layered architecture of this 1212 structure.

Original languageEnglish
Pages (from-to)601-608
Number of pages8
JournalInternational Journal of Inorganic Materials
Volume2
Issue number6
DOIs
Publication statusPublished - 2000

Keywords

  • Cuprates
  • D. Superconductivity
  • Ferromagnetism
  • Ruthenium

ASJC Scopus subject areas

  • Materials Chemistry

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