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https://hdl.handle.net/2445/117634| Title: | Influence of porosity on the critical currents of trifluoroacetate-MOD YBa2Cu3O7 films |
| Author: | Castaño Linares, Óscar Cavallaro, Andrea Palau Masoliver, Anna González, J. C. Rossell, Marta Dàcil Puig, Teresa Piñol, S. Mestres Andreu, Narcís Sandiumenge Ortiz, Felip Pomar Barbeito, Alberto Obradors, Xavier |
| Keywords: | Pel·lícules fines Porositat Superconductivitat Revestiments Thin films Porosity Superconductivity Coatings |
| Issue Date: | 2-Jun-2003 |
| Publisher: | Institute of Electrical and Electronics Engineers (IEEE) |
| Abstract: | The influence of porosity on the superconducting properties have been investigated on YBa/sub 2/Cu/sub 3/O/sub 7/ thin films deposited on LaAlO/sub 3/ [100] substrates by the so-called Trifluoroacetate (TFA) route. Micro-Raman spectroscopy have been used to determine the concentration of c-axis grains /spl delta/ in different samples and their influence on the final film porosity as observed from SEM imaging. This has been compared with measurements of resistivity and critical currents in the same samples. We prove that this /spl delta/ fraction is the main parameter controlling the porosity and hence the normal-state resistivity of the thin films. The optimization of the microstructure of these YBa/sub 2/Cu/sub 3/O/sub 7/ TFA films allow to have high critical currents : J/sub c/ = 3 /spl times/ 10/sup 6/ A/cm/sup 2/ at 77 K. |
| Note: | Reproducció del document publicat a: https://doi.org/10.1109/TASC.2003.811832 |
| It is part of: | IEEE Transactions on Applied Superconductivity, 2003, vol. 13, num. 2, p. 2504-2507 |
| URI: | https://hdl.handle.net/2445/117634 |
| Related resource: | https://doi.org/10.1109/TASC.2003.811832 |
| ISSN: | 1051-8223 |
| Appears in Collections: | Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) |
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