Crystal chemistry and properties of the defect phases YBa sub 2 minus x Cu sub 3 O sub y

Conference · Fri Mar 01 04:00:00 EST 1991 · IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States)

OSTI ID:6116175

Plesch, G; Hanic, F; Shavikovski, V E; Herkeloua, M; Svecoua, B ^[1]; Jergel, M; Strbik, V; Majoros, M; Kedrova, M ^[2]; Shvaikovski, V E; Nouikov, A I ^[3]

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1. Inst. of Inorganic Chemistry, Slovak Academy of Science, 842 36 Bratislava (CS)
2. Electrotechnical Inst., Slovak Academy of Sciences, 842 39 Bratislava (CS)
3. Inst. of Silicate Chemistry, Academy of Sciences USSR, Nab. Makarova 2, 199164 Leningrad (SU)

This paper reports on the V-A characteristics, without and with an outer magnetic field T{sub c}, phase stability at high temperatures, oxygen intercalation capacity in different ambient atmospheres (pO{sub 2} = 1 Pa, 4.10{sup 3} Pa and 2.10{sup 4} Pa) and paramagnetic behavior of ceramic samples YBa{sub 2{minus}x}Cu{sub 3}O{sub y} correlated with the chemical composition and the applied technology for synthesis of the defect phases. The X-ray diffraction, thermogravimetric, EPR and four point resistive method were applied in the investigation of structure, phase composition and physical properties of the Ba-deficient YBa{sub 2{minus}x}Cu{sub 3}O{sub y} phases. The optimum of superconducting properties and the lowest contamination of the investigated system were found for composition YBa{sub 1.95}Cu{sub 3}O{sub y}.

• OSTI ID: 6116175
• Report Number(s): CONF-900944--
• Conference Information: Journal Name: IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) Journal Volume: 27:2
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360207 -- Ceramics
Cermets
& Refractories-- Superconducting Properties-- (1992-)
665411 -- Basic Superconductivity Studies-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM OXIDES
CHALCOGENIDES
CHEMICAL COMPOSITION
COHERENT SCATTERING
COPPER COMPOUNDS
COPPER OXIDES
DIFFRACTION
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
MAGNETIC FIELDS
MAGNETISM
OXIDES
OXYGEN COMPOUNDS
PARAMAGNETISM
PHASE STABILITY
PHASE STUDIES
PHYSICAL PROPERTIES
SCATTERING
STABILITY
SUPERCONDUCTIVITY
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES