Synthesis of cuprates of perovskite structure in the Ba-Pb-Cu-O, Ba-Bi-CU-O, and Ba-Pb-TI-Cu-O systems: Possible high T[sub c] superconductivity in a perovskite-like phase in the Ba-Pb-TI-Cu-O system
Journal Article
·
· Journal of Solid State Chemistry; (United States)
- Indian Institute of Science, Bangalore (India)
Cubic cuprates (a [approximately] 18.6 [angstrom]) with a BaCuO[sub 2]-type structure were obtained in the Ba-Pb-Cu-O and Ba-Bi-Cu-O systems by the reaction of the component oxides at a high temperature (1370-1420 K), followed by quenching. By annealing these phases in oxygen at 1070-1120 K, perovskite-like phase (a [approximately] 4.3 [angstrom]) of the formulae BaPb[sub 1[minus]x]Cu[sub x]O[sub 3[minus]y] and BaBi[sub 1[minus]x]Cu[sub x]O[sub 3[minus]y] (0 < x [le] 0.5) were obtained. A perovskite of nominal composition BaPb[sub 0.25]TI[sub 0.25]Cu[sub 0.5]O[sub 3[minus]y], prepared by a similar procedure, was found to be superconducting with a T[sub c] of [approximately] 70 K.
- OSTI ID:
- 6621450
- Journal Information:
- Journal of Solid State Chemistry; (United States), Journal Name: Journal of Solid State Chemistry; (United States) Vol. 109:1; ISSN 0022-4596; ISSN JSSCBI
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CHEMICAL PREPARATION
COPPER COMPOUNDS
CRITICAL TEMPERATURE
CUPRATES
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
LEAD COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
SYNTHESIS
THALLIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207* -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
ALKALINE EARTH METAL COMPOUNDS
ANNEALING
BARIUM COMPOUNDS
BISMUTH COMPOUNDS
CHEMICAL PREPARATION
COPPER COMPOUNDS
CRITICAL TEMPERATURE
CUPRATES
HEAT TREATMENTS
HIGH-TC SUPERCONDUCTORS
LEAD COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SUPERCONDUCTORS
SYNTHESIS
THALLIUM COMPOUNDS
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE