Tl/sub 2/Ba/sub 2/Ca/sub 3/Cu/sub 4/O/sub 12/, a new 104. Kappa. superconductor of the family (AO)/sub 3/ (A'CuO/sub 3-y/)/sub m/
Journal Article
·
· Modern Physics Letters B; (USA)
- Laboratoire de Cristallographie et Sciences des Materiaux, ISMRa, Boulevard du Marechal Juin, 14032 Caen Cedex (FR)
A new superconductor Tl/sub 2/Ba/sub 2/Ca/sub 3/Cu/sub 4/O/sub 12/ has been synthesized with a T/sub c/ onset at 120 {Kappa} and a zero resistance at 104 {Kappa}. The X-ray powder investigation and HREM study allow a structural model to be proposed. The tetragonal cell, with a = 3.852A and c = 42.00A, corresponds to the intergrowth of triple rocksalt type layers with quadruple oxygen deficient perovskite layers leading to the structural formulation ((T1O)/sub 2/ (BaO)) (BaCa/sub 3/Cu/sub 4/O/sub 9/). This oxide which represents the member n = 3, m = 4 of the series (AO)/sub n/(A'CuO/sub 3-y/)/sub m/, shows that T/sub c/ seems to tend towards a limit as the number of copper planes forming the perovskite layers increases.
- OSTI ID:
- 5612498
- Journal Information:
- Modern Physics Letters B; (USA), Journal Name: Modern Physics Letters B; (USA) Vol. 2:9; ISSN MPLBE; ISSN 0217-9849
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
MINERALS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
PHYSICAL PROPERTIES
POINT DEFECTS
POWDERS
SCATTERING
SUPERCONDUCTIVITY
TETRAGONAL LATTICES
THALLIUM COMPOUNDS
THALLIUM OXIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VACANCIES
X-RAY DIFFRACTION
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204 -- Ceramics
Cermets
& Refractories-- Physical Properties
656002 -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL DEFECTS
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
ELEMENTS
MINERALS
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
PEROVSKITE
PEROVSKITES
PHYSICAL PROPERTIES
POINT DEFECTS
POWDERS
SCATTERING
SUPERCONDUCTIVITY
TETRAGONAL LATTICES
THALLIUM COMPOUNDS
THALLIUM OXIDES
TITANIUM COMPOUNDS
TITANIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
VACANCIES
X-RAY DIFFRACTION