Preparation of Y-Ba-Cu-O superconducting tape by pyrolysis of organic acid salts

A Y-Ba-Cu-O superconducting tape of 124 phase was successfully synthesized at atmospheric pressure by pyrolysis of organic acid salts. T/sub c(on)/=80 K and T/sub c(end)/=70 K were obtained along with a J/sub c/ of 2*10/sup 4/ A/cm/sup 2/ at 4.2 K and 0 T. An addition of calcium was found to elevate...

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Veröffentlicht in:	IEEE Transactions on Magnetics (Institute of Electrical and Electronics Engineers); (United States) 1991-03, Vol.27 (2), p.905-908
Hauptverfasser:	Amemiya, I., Kobayasi, H., Nakamoto, T., Hasegawa, T.
Format:	Artikel
Sprache:	eng
Schlagworte:	ALKALINE EARTH METAL COMPOUNDS ALKALINE EARTH METALS BARIUM COMPOUNDS BARIUM OXIDES CALCIUM CHALCOGENIDES CHEMICAL REACTIONS Condensed matter: electronic structure, electrical, magnetic, and optical properties COPPER COMPOUNDS COPPER OXIDES DECOMPOSITION ELECTRIC CONDUCTIVITY ELECTRICAL PROPERTIES ELEMENTS Exact sciences and technology FABRICATION Heat treatment High temperature superconductors Manufacturing processes MATERIALS SCIENCE METALS ORGANIC ACIDS ORGANIC COMPOUNDS OXIDES OXYGEN COMPOUNDS PHASE STUDIES PHYSICAL PROPERTIES Physics PYROLYSIS SILVER Solvents SUBSTRATES Superconducting cables Superconducting films Superconducting materials Superconducting materials (excluding high-tc compounds) SUPERCONDUCTIVITY THERMOCHEMICAL PROCESSES THERMODYNAMIC PROPERTIES TRANSITION ELEMENT COMPOUNDS TRANSITION ELEMENTS TRANSITION TEMPERATURE X-ray diffraction Yttrium barium copper oxide YTTRIUM COMPOUNDS 360201 > Ceramics, Cermets, & Refractories-- Preparation & Fabrication YTTRIUM OXIDES
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Zusammenfassung:	A Y-Ba-Cu-O superconducting tape of 124 phase was successfully synthesized at atmospheric pressure by pyrolysis of organic acid salts. T/sub c(on)/=80 K and T/sub c(end)/=70 K were obtained along with a J/sub c/ of 210/sup 4/ A/cm/sup 2/ at 4.2 K and 0 T. An addition of calcium was found to elevate the T/sub c/ and improve the compactness of the film. The J/sub c/ of this sample is 3.210/sup 4/ A/cm/sup 2/ at 4.2 K and 0 T. The J/sub c/-B characteristic is better than that of the 124 phase without substitution.
ISSN:	0018-9464 1941-0069
DOI:	10.1109/20.133322