Composition dependence of superconductivity and crystal structure in La(Ba1-chiCachi)2 Cu3O7-y system
- 1. Institute of Physics, Chinese Academy of Sciences, Beijing (China)
Description
The composition dependence of superconductivity and crystal structure in La(Ba1-chiCachi)2Cu3O7-y system was determined by the resistivity measurements and X-ray diffraction analysis. The superconducting transition temperature is raised with the increase of Ca content till chi=0.6, at which the zero resistance temperature of the sample is 81.5Κ. In the meanwhile, the crystal structure of the sample changed from tetragonal (chi=0) to orthorhombic structure (chi=0.2,0.4,0.6). With further increase of Ca content, the superconductivity decrease for the sample of chi=0.8 with mixed phases including the orthorhombic oxygen-deficient perovskite-like (ODP) structure and no superconducting transition is found at 4.2Κ for the sample of chi=1 without the ODP structure. A possible explanation of these experimental results is given
Additional details
Publishing Information
- Journal Title
- Modern Physics Letters B
- Journal Volume
- 3
- Journal Issue
- 4
- Series
- Mod. Phys. Lett. B.
- Journal Page Range
- 307-311
- CODEN
- MPLBE
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 21005522
- Subject category
- S36: MATERIALS SCIENCE; S36: MATERIALS SCIENCE; S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BARIUM OXIDES; CALCIUM OXIDES; CHEMICAL COMPOSITION; COPPER OXIDES; CRYSTAL STRUCTURE; EXPERIMENTAL DATA; LANTHANUM OXIDES; ORTHORHOMBIC LATTICES; PEROVSKITE; SUPERCONDUCTIVITY; SUPERCONDUCTORS; TETRAGONAL LATTICES; TRANSITION TEMPERATURE; X-RAY DIFFRACTION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; CALCIUM COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL LATTICES; DATA; DIFFRACTION; ELECTRIC CONDUCTIVITY; ELECTRICAL PROPERTIES; INFORMATION; LANTHANUM COMPOUNDS; MINERALS; NUMERICAL DATA; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SCATTERING; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS