Superconductivity of Bi0.25-ySr0.25-yCa2yCu0.5Ox (y{=}0.1, 0.125, 0.15)
Abstract
Resistivity and magnetic susceptibility of superconducting Bi0.25-ySr0.25-yCa2yCu0.5Ox (y{=}0.1, 0.125, 0.15) have been measured and compared with the results of X-ray powder diffraction. The volume fraction of the low-Tc phase (Tc∼ 75 K) decreases as the Ca concentration is increased and superconductivity attributed to the high-Tc phase (Tc>100 K) is observed. Resistivity of Bi0.125Sr0.125Ca0.25Cu0.5Ox shows a sharp transition above 100 K and becomes zero at 97 K.
- Publication:
-
Japanese Journal of Applied Physics
- Pub Date:
- April 1988
- DOI:
- Bibcode:
- 1988JaJAP..27L.542S
- Keywords:
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- Bismuth Oxides;
- High Temperature Superconductors;
- Magnetic Permeability;
- Mixed Oxides;
- Superconductivity;
- Calcium Oxides;
- Copper Oxides;
- Temperature Dependence;
- X Ray Diffraction;
- Solid-State Physics