Increased critical current density and pinning in thick Ag/YBa2Cu3O7−x multilayers |
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| Authors: | VS Dang P Mikheenko A Sarkar MM Awang Kechik JS Abell A Crisan |
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| Institution: | 1. School of Metallurgy and Materials, University of Birmingham, Birmingham B15 2TT, United Kingdom;2. National Institute of Materials Physics, 105 bis Atomistilor Str., Bucharest 077125, Romania |
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| Abstract: | We have investigated the superconducting properties of Ag/YBa2Cu3O7−x thick multilayers grown by Pulsed Laser Deposition, and found that the artificial pinning centres induced by Ag nanodots lead to a significant increase in critical current, especially in high applied magnetic fields. Transmission Electron Microscopy showed a columnar growth of YBa2Cu3O7−x induced by Ag nanodots, while angle-dependent transport measurements revealed the existence of strong, both isotropic and c-axis correlated, artificial pinning centres. |
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| Keywords: | YBCO films Artificial pinning centres Multilayers Critical current density |
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