Preparation and magnetic behavior of EuBa/sub 2/Cu/sub 3-y/M/sub y/)/sub 6. 5 + x/ (M = Ni, Co, Al, and Zn) and some related compounds
The substitution limits and the change in T/sub c/ produced by substituting selected comparably sized cations for copper in the high-T/sub c/ superconductivity phase, EuBa/sub 2/O/sub 6.5+x/, are determined. The elements, M = Ni, Co, Zn, and Al, substitute for copper only to a limited extent to produce EuBa/sub 2/Cu/sub 3-y/ M/sub y/O/sub 6.5+x/ phases. Attempts to completely replace the copper ions and retain orthorhombic structure were unsuccessful. As substitution progressed, a tetragonal phase became stabilized and the superconducting transition temperature, T/sub c/, decreased sharply. Magnetic properties and superconducting transition temperatures of the maximally substituted phases and of EuBa/sub 2/-CuO/sub 6.5 + x/ are reported.
- Research Organization:
- Michigan State Univ., East Lansing (USA)
- OSTI ID:
- 6258030
- Journal Information:
- J. Solid State Chem.; (United States), Journal Name: J. Solid State Chem.; (United States) Vol. 77:1; ISSN JSSCB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL PREPARATION
COBALT COMPOUNDS
COBALT OXIDES
COPPER COMPOUNDS
COPPER OXIDES
DATA
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EUROPIUM COMPOUNDS
EUROPIUM OXIDES
EXPERIMENTAL DATA
INFORMATION
MAGNETIC PROPERTIES
NICKEL COMPOUNDS
NICKEL OXIDES
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SUPERCONDUCTIVITY
SYNTHESIS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
ZINC COMPOUNDS
ZINC OXIDES