Macroscopic persistent currents in laser ablated YBa2Cu3O7-x films

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STRITZKER, Bernd, Paul LEIDERER, Rudolf FEILE, U. KRÜGER, W. ZANDER, 2011. Macroscopic persistent currents in laser ablated YBa2Cu3O7-x films. In: MRS Proceedings. 169. eISSN 1946-4274

@article{Stritzker2011-02-28Macro-8942, title={Macroscopic persistent currents in laser ablated YBa2Cu3O7-x films}, year={2011}, doi={10.1557/PROC-169-899}, volume={169}, journal={MRS Proceedings}, author={Stritzker, Bernd and Leiderer, Paul and Feile, Rudolf and Krüger, U. and Zander, W.} }

<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:bibo="http://purl.org/ontology/bibo/" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" > <rdf:Description rdf:about="https://kops.uni-konstanz.de/rdf/resource/123456789/8942"> <dc:creator>Feile, Rudolf</dc:creator> <dcterms:available rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:52:16Z</dcterms:available> <dc:language>eng</dc:language> <dc:date rdf:datatype="http://www.w3.org/2001/XMLSchema#dateTime">2011-03-24T17:52:16Z</dc:date> <dc:creator>Krüger, U.</dc:creator> <dcterms:abstract xml:lang="eng">Thin films of YBa2Cu3O7-x have been produced in situ by laser ablation. As the condensation of the superconducting film is done onto hot substrates (600-780°C) at high oxygen pressures (- 1 mbar), this techniques does not require any special postannealing step. Thus the total process time amounts to less than 10 min. Films were found to be polycrystalline with the c-axis preferentially oriented normal to the substrate plane on single crystalline (001) SrTiO3 and (random) Zr=2, as measured by ion channeling (Xmin = 5.5% on SrTiO3), x-ray scattering and TEM. Complete superconducting transitions above 90 K with transition widths of about 1 K have been observed even on YSZ substrates. Critical current densities, jc (77 K), of more than 2 x 10 6 A/cm2 could be obtained on SrTiO3-substrates. The high quality of the thin films over large areas was demonstrated by the measurement of persistent superconducting current densities at 77 K in the order of 10 5 A/cm2 in a 1.5 mm broad ring of 9 mm diameter. No dissipation of this persistent current could be observed during one hour. Measurement of the same film after 8 months in normal air showed a 40% decrease of jc and a stronger decrease of jc with an externed magnetic field, suggesting that in the meantime the macroscopic ring current density is dominated by intergranular weak links.</dcterms:abstract> <dcterms:issued>2011-02-28</dcterms:issued> <dc:rights>deposit-license</dc:rights> <dc:creator>Stritzker, Bernd</dc:creator> <dc:contributor>Zander, W.</dc:contributor> <dc:contributor>Feile, Rudolf</dc:contributor> <dc:creator>Leiderer, Paul</dc:creator> <bibo:uri rdf:resource="http://kops.uni-konstanz.de/handle/123456789/8942"/> <dc:contributor>Stritzker, Bernd</dc:contributor> <dcterms:bibliographicCitation>First publ. in: Material Research Society Symposium Proceedings 169 (1990), pp. 899-902</dcterms:bibliographicCitation> <dcterms:title>Macroscopic persistent currents in laser ablated YBa2Cu3O7-x films</dcterms:title> <dc:creator>Zander, W.</dc:creator> <dc:format>application/pdf</dc:format> <dc:contributor>Krüger, U.</dc:contributor> <dcterms:rights rdf:resource="https://creativecommons.org/licenses/by-nc-nd/2.0/legalcode"/> <dc:contributor>Leiderer, Paul</dc:contributor> </rdf:Description> </rdf:RDF>

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