Superconducting oxide group with zero-resistance temperature above 90 K
Seven ABO/sub 3/ type-structure superconducting oxides Sr/sub 0.4/Y/sub 0.6/CuO/sub 3-//sub y/ and Ba/sub 0.4/Ln/sub 0.6/CuO/sub 3-//sub y/ (Ln is Y, Tm, Dy, Gd, Er and Yb, respectively) have been successfully synthesized, the zero-resistance temperatures of which exceed 90 K. The resistivity measurements show that both the R(T) behavior and the T/sub c/ superconducting transition of each sample agree, although the component atoms A in each oxide are obviously different in their outer shell electrons. However the a.c. susceptibility measurements show the difference of M(T) behavior in the normal state which might be due to the difference of the magnetic atoms A. We argue that the Cu-O bonds within the ABO/sub 3/ type structural frame play an important role in the electronic properties in these superconducting oxides. There is a strong interaction between the electrons in this structure. The magnetic scattering of electrons is not strong enough to destroy the high T/sub c/ superconductivity.
- Research Organization:
- Department of Physics, Department of Applied Chemistry, University of Science and Technology of China, Hefei
- OSTI ID:
- 6747016
- Journal Information:
- Chin. Phys.; (United States), Journal Name: Chin. Phys.; (United States) Vol. 8:4; ISSN CHPHD
- Country of Publication:
- United States
- Language:
- English
Similar Records
Crystal chemistry and superconductivity of the copper oxides
Superconductor with zero resistance at 96 K in Y/sub 0. 4/Ba/sub 0. 6/CuO/sub 3-//sub delta/ and its instability
Related Subjects
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
AC SYSTEMS
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
DYSPROSIUM COMPOUNDS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ENERGY SYSTEMS
ERBIUM COMPOUNDS
LANTHANUM COMPOUNDS
LOW TEMPERATURE
MAGNETIC PROPERTIES
MAGNETIC SUSCEPTIBILITY
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POWER SYSTEMS
RARE EARTH COMPOUNDS
STRONTIUM COMPOUNDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
SYNTHESIS
THULIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTERBIUM COMPOUNDS
YTTRIUM COMPOUNDS