High-Tc superconductivity in regions of possible compound formation: Y2-xBaxCuO4-x/2+δ and Y2-xBa1+xCu2O6-x/2+δ
Abstract
High-Tc superconductivity is investigated in the Y-Ba-Cu-O system. Regions of possible compound formation are Y2-xBaxCuO4-x/2+δ and Y2-xBa1+xCu2O6-x/2+δ. Tc values >90 K are found for the former with x=0.8 (the Chu material) and for the latter with x=0.2 and may imply a common superconductivity phase in both samples. Critical fields determined by resistance and low-field dc susceptibility measurements are reported.
- Publication:
-
Physical Review B
- Pub Date:
- May 1987
- DOI:
- 10.1103/PhysRevB.35.7119
- Bibcode:
- 1987PhRvB..35.7119H
- Keywords:
-
- Electrical Resistance;
- High Temperature Superconductors;
- Magnetic Permeability;
- Mixed Oxides;
- Transition Temperature;
- Yttrium Oxides;
- Barium Oxides;
- Copper Oxides;
- Temperature Dependence;
- X Ray Diffraction;
- Solid-State Physics;
- 74.10.+v;
- 74.70.Jm;
- Occurrence potential candidates