Superconductivity studies on (Ln/sub 1-chi/Lu/sub chi/)Ba/sub 2/Cu/sub 3/O/sub 7/, Ln = La, Sm
- Indian Inst. of Tech., Madras (India). Materials Science Research Centre
In the system Sm/sub 1-chi/Lu/sub chi/Ba/sub 2/Cu/sub 3/O/sub 7/ single phase orthorhombic perovskite is formed for chi{le}0.5 above which a multiphase material is obtained with the predominant 123 phase. All the phases except when chi = 1.0, exhibit superconductivity with T/sub c,zero/ in the range 87-90 {Kappa}. Pure LaBa/sub 2/Cu/sub 3/O/sub 7/ is tetragonal and shows a T/sub c,zero/ of 73 {Kappa}. Orthorhombic distortion and a T/sub c,zero/ of 79 {Kappa} can be induced for chi = 0.1 in La/sub 1-chi/Lu/sub chi/Ba/sub 2/Cu/sub 3/O/sub 7/. In the latter system, single phase materials are obtained for chi{le}0.5 However, all phases exhibit superconductivity with T/sub c,zero/ = 90 +- 2 {Kappa} for 0.2{le}chi{le}0.8.
- OSTI ID:
- 5658198
- Journal Information:
- Modern Physics Letters B; (USA), Journal Name: Modern Physics Letters B; (USA) Vol. 3:8; ISSN MPLBE; ISSN 0217-9849
- Country of Publication:
- United States
- Language:
- English
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75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL LATTICES
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
LANTHANUM COMPOUNDS
LANTHANUM OXIDES
MINERALS
ORTHORHOMBIC LATTICES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
PHASE STUDIES
PHYSICAL PROPERTIES
RARE EARTH COMPOUNDS
SAMARIUM COMPOUNDS
SAMARIUM OXIDES
SUPERCONDUCTIVITY
TETRAGONAL LATTICES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS