Superconductivity in Bi-Ca-Y-Sr-Cu-O (2122) and Tl-Ca-Y-Ba-Cu-O (1122) systems; Effect of substitution of Ca BY Y/sup +/

Journal Article · Sat Dec 31 23:00:00 EST 1988 · Materials Research Bulletin; (USA)

DOI:https://doi.org/10.1016/0025-5408(89)90015-9· OSTI ID:5370580

Ganguli, A K; Nagarajan, R; Nanjundaswamy, K S; Rao, C N.R. ^[1]

---

1. Indian Inst. of Science, Bangalore (India). Solid State and Structural Chemistry Unit

Effect of substitution of Ca by Y on the properties of T1CaBa/sub 2/Cu/sub 2/O/sub 7/ (1122) and Bi/sub 2/CaSr/sub 2/O/sub 8+{delta}/ (2122) has been studied. Lattice parameters vary progressively with increase in Y concentration in both the systems. In T1Ca/sub 1/1-chi//Y/sub chi/Ba/sub 2/Cu/sub 2/O/sub 7+{delta}/, compositions with chi{le} 0.5 are superconducting. In Bi/sub 2/Ca/sub 1-chi/Y/sub chi/Sr/sub 2/Cu/sub 2/O/sub 8+{delta}/, compositions with chi {le} 0.5 are superconducting; oxides of both these systems become semiconducting for higher values of chi. In Bi-(Ca, Y, Sr)/sub 3/ Cu/sub 2/O/sub /8+{delta}//, T/sub c/ decreases with the increasing Y/Ca ratio becoming zero at a finite value of the ratio.

• OSTI ID: 5370580
• Journal Information: Materials Research Bulletin; (USA), Journal Name: Materials Research Bulletin; (USA) Vol. 24:1; ISSN MRBUA; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360204* -- Ceramics
Cermets
& Refractories-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
656100 -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
CHEMICAL REACTION KINETICS
COPPER COMPOUNDS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
KINETICS
LATTICE PARAMETERS
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
PHYSICAL PROPERTIES
REACTION KINETICS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
THALLIUM COMPOUNDS
THALLIUM OXIDES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES