The structural, electrophysical, and magnetic properties of high-temperature superconducting Gd1 + xBa2 - xCu3O7 - δ (0<x<0.38) ceramics are investigated experimentally. As x increases, the first critical field and the temperature of the superconducting transition decrease, while the width of the transition increases. The variation of Tc(x) resembles curves obtained previously for KE1 + xBa2 - xCu3O7 - δ compounds (RE = Nd, Eu, Sm). Some possible ways in which the substitution of Gd3 + for barium influences the electronic structure and population of various sites with oxygen atoms are discussed; these factors suppress superconductivity in the given compounds.
|Number of pages||5|
|Journal||Physics of the Solid State|
|State||Published - 1 Jan 1996|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics