caa a22 4500 445380764 CHVBK 20180317143016.0 cr unu---uuuuu 170323e20110101xx s 000 0 eng 10.1007/s10948-010-0914-6 doi (NATIONALLICENCE)springer-10.1007/s10948-010-0914-6 Improved Critical Current Densities in YBa2Cu3O7− δ Multilayer Films Interspaced with Palladium Nano-dots [Elektronische Daten] [A. Sarkar, P. Mikheenko, V. Dang, M. AwangKechik, J. Abell, A. Crisan] Power applications of superconducting coated conductors in high magnetic fields require thick films with high critical current density J c and strong artificial pinning centers. Here, we report on the artificial pinning centers induced in YBCO quasi-multilayer films interspaced with palladium (Pd) nano-dots. Quasi-multilayered (QM) YBa2Cu3O7−δ (YBCO) films composed of YBCO layers interspaced with quasi-layers of palladium nano-dots were grown by pulsed laser deposition on SrTiO3(100) substrates. DC magnetization and frequency-dependent measurements showed high J c comparable with best YBCO films in thin quasi-multilayers and significant improvement of J c in thick quasi-multilayers. TEM study shows regions of planar defects, stacking faults, and pore formations suitable for immobilizing vortices. These defects significantly contribute to the pinning of magnetic flux and increase critical current in the films. Springer Science+Business Media, LLC, 2010 Superconducting films nationallicence Multilayers nationallicence Pinning centers nationallicence Critical current nationallicence Sarkar A. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut Mikheenko P. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut Dang V. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut AwangKechik M. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut Abell J. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut Crisan A. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 173-177 1557-1939 24:1-2<173 2011 24 10948 https://doi.org/10.1007/s10948-010-0914-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10948-010-0914-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Sarkar A. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut NATIONALLICENCE 700 1- Mikheenko P. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut NATIONALLICENCE 700 1- Dang V. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut NATIONALLICENCE 700 1- AwangKechik M. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut NATIONALLICENCE 700 1- Abell J. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut NATIONALLICENCE 700 1- Crisan A. School of Metallurgy and Materials, University of Birmingham, B15 2TT, Birmingham, UK aut NATIONALLICENCE 773 0- Journal of Superconductivity and Novel Magnetism Springer US; http://www.springer-ny.com 24/1-2(2011-01-01), 173-177 1557-1939 24:1-2<173 2011 24 10948 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer