We present the composite [Y1-xCax]SrBaCu2.80(PO4)0.20Oy (0.10 ≤ x ≤ 0.40) prepared at normal temperature and pressure conditions. X-ray diffraction patterns show that samples containing Ca crystallize in a 123 tetragonal structure with small amounts of impurities. The Rietveld method was used to refine the lattice constants. Ac and dc susceptibility measurements using a SQUID show that the materials are superconductors independent of Ca content. In the normal region the measurements of χDC show a typical Curie-Weiss law behavior.
|Journal||Physica C: Superconductivity and its Applications|
|State||Published - Nov 2000|
|Event||International Conference on Materials and Mechanisms of Superconductivity High Temperature Superconductors VI - Houston, TX, USA|
Duration: 20 Feb 2000 → 25 Feb 2000
Bibliographical noteFunding Information:
*This work was supported by the CSI under contract #81301031.