Title Large pinning forces and matching effects in $YBa_{2}Cu_{3}O_{7-\delta}$ thin films with $Ba_{2}Y(Nb/Ta)O_{6}$ nano-precipitatesLarge pinning forces and matching effects in $YBa_{2}Cu_{3}O_{7-\delta}$ thin films with $Ba_{2}Y(Nb/Ta)O_{6}$ nano-precipitates Author Opherden, Lars Sieger, Max Pahlke, Patrick Meledin, Alexander Van Tendeloo, Gustaaf et al. Faculty/Department Faculty of Sciences. Physics Research group Electron microscopy for materials research (EMAT) Publication type article Publication 2016London :Nature Publishing Group, 2016 Subject Physics Chemistry Engineering sciences. Technology Source (journal) Scientific reports. - London, 2011, currens Volume/pages 6(2016), 10 p. ISSN 2045-2322 2045-2322 Article Reference 21188 Carrier E-only publicatie Target language English (eng) Full text (Publishers DOI) Affiliation University of Antwerp Abstract The addition of mixed double perovskite Ba2Y(Nb/Ta)O6 (BYNTO) to YBa2Cu3O7−δ (YBCO) thin films leads to a large improvement of the in-field current carrying capability. For low deposition rates, BYNTO grows as well-oriented, densely distributed nanocolumns. We achieved a pinning force density of 25 GN/m3 at 77 K at a matching field of 2.3 T, which is among the highest values reported for YBCO. The anisotropy of the critical current density shows a complex behavior whereby additional maxima are developed at field dependent angles. This is caused by a matching effect of the magnetic fields c-axis component. The exponent N of the current-voltage characteristics (inversely proportional to the creep rate S) allows the depinning mechanism to be determined. It changes from a double-kink excitation below the matching field to pinning-potential-determined creep above it. Full text (open access) https://repository.uantwerpen.be/docman/irua/280c4d/131920.pdf E-info http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000370364500001&DestLinkType=RelatedRecords&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000370364500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000370364500001&DestLinkType=CitingArticles&DestApp=ALL_WOS&UsrCustomerID=ef845e08c439e550330acc77c7d2d848 Handle