Tl sub 2 Ba sub 2 minus x Sr sub x CuO sub 6 : A system exhibiting a compositionally controlled superconductor-metal transition

Journal Article · Thu Jan 31 23:00:00 EST 1991 · Journal of Solid State Chemistry; (USA)

DOI:https://doi.org/10.1016/0022-4596(91)90157-D· OSTI ID:5690725

Ganguli, A K; Subramanian, M A ^[1]

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1. E.I. du Pont de Nemours and Company, Wilmington, DE (USA)

Strontium-substituted thallium cuprates of the type Tl{sub 2}Ba{sub 2{minus}x}Sr{sub x}CuO{sub 6} have been synthesized for various values of x. Single phases were obtained for x {le} 1.2. The compounds crystallize in the tetragonal structure with space group I4/mmm as the parent Tl{sub 2}Ba{sub 2}CuO{sub 6} oxide. Both a and c lattice parameter decrease with increase in x. {Tc} decreases gradually from 92 to 77 K (x = 0.8). Beyond x = 1.0 superconductivity is lost. The x = 1.2 comparison is metallic down to 4.2 K.

• OSTI ID: 5690725
• Journal Information: Journal of Solid State Chemistry; (USA), Journal Name: Journal of Solid State Chemistry; (USA) Vol. 90:2; ISSN 0022-4596; ISSN JSSCB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
CRYSTAL STRUCTURE
DATA
DATA ANALYSIS
EXPERIMENTAL DATA
HIGH-TC SUPERCONDUCTORS
INFORMATION
LATTICE PARAMETERS
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SPACE GROUPS
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTORS
THALLIUM COMPOUNDS
THALLIUM OXIDES
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE