Published August 19, 1991
| Version v1
Journal article
New high Tc superconductor: (In,Pb,Cu)Sr2(Ca,Y)Cu2O7-δ
Creators
- 1. IRC in Superconductivity, University of Cambridge, Madingley Road, CB3 0HE, United Kingdom (UK)
Description
Bulk superconductivity was observed in the new system (InxPb0.75-xCu0.25)Sr2(Ca0.5Y0.5)Cu2 O7-δ. An increase in indium doping, 0≤x≤0.2, into the Pb sites results in an increase in the superconducting transition temperature Tc from 45 K for x=0 to 60 K for x=0.2. For nominal compositions x>0.2, a decrease in Tc was observed, and an increase in the concentration of an impurity phase. From the results of the x-ray diffraction and energy- dispersive spectrometry, we identify the phase responsible for the superconductivity to be [In0.06(1)Pb0.69(1)Cu0.25]Sr1.99(7)[Ca0.47(1)Y 0.53(2)]Cu2O7-δ; this phase resulted from the synthesis of a sample of nominal composition (In0.2Pb0.55Cu0.25)Sr2(Ca0.5Y0.5)Cu2 O7-δ
Additional details
Publishing Information
- Journal Title
- Applied Physics Letters
- Journal Volume
- 59
- Journal Issue
- 8
- Series
- Appl. Phys. Lett.
- Journal Page Range
- 985-987
- ISSN
- 0003-6951
- CODEN
- APPLA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 22083670
- Subject category
- S36: MATERIALS SCIENCE;
- Descriptors DEI
- CHEMICAL COMPOSITION; COPPER OXIDES; HIGH-TC SUPERCONDUCTORS; IMPURITIES; INDIUM OXIDES; LEAD OXIDES; STRONTIUM OXIDES; TRANSITION TEMPERATURE; X-RAY DIFFRACTION; YTTRIUM OXIDES
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; DIFFRACTION; INDIUM COMPOUNDS; LEAD COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; SCATTERING; STRONTIUM COMPOUNDS; SUPERCONDUCTORS; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS