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 language | English (US) |
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Pages (from-to) | 601-608 |
Number of pages | 8 |
Journal | International Journal of Inorganic Materials |
Volume | 2 |
Issue number | 6 |
DOIs | |
State | Published - 2000 |
Keywords
- Cuprates
- D. Superconductivity
- Ferromagnetism
- Ruthenium
ASJC Scopus subject areas
- Materials Chemistry