Influence of porosity on the critical currents of trifluoroacetate-MOD YBa2Cu3O7 films

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RECERCAT Principal > Universitat de Barcelona > Enginyeria Electrònica i Biomèdica > Articles publicats en revistes (Enginyeria Electrònica i Biomèdica) > Visualizar documento

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dc.contributor	Universitat de Barcelona
dc.contributor.author	Castaño Linares, Óscar
dc.contributor.author	Cavallaro, Andrea
dc.contributor.author	Palau Masoliver, Anna
dc.contributor.author	González, J. C.
dc.contributor.author	Rossell, Marta Dàcil
dc.contributor.author	Puig, Teresa
dc.contributor.author	Piñol, S.
dc.contributor.author	Mestres Andreu, Narcís
dc.contributor.author	Sandiumenge Ortiz, Felip
dc.contributor.author	Pomar Barbeito, Alberto
dc.contributor.author	Obradors, Xavier
dc.date	2017-11-10T17:03:05Z
dc.date	2017-11-10T17:03:05Z
dc.date	2003-06-02
dc.date	2017-11-10T17:03:05Z
dc.identifier.citation	1051-8223
dc.identifier.citation	674088
dc.identifier.uri	http://hdl.handle.net/2445/117634
dc.format	4 p.
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation	Reproducció del document publicat a: https://doi.org/10.1109/TASC.2003.811832
dc.relation	IEEE Transactions on Applied Superconductivity, 2003, vol. 13, num. 2, p. 2504-2507
dc.relation	https://doi.org/10.1109/TASC.2003.811832
dc.rights	(c) Institute of Electrical and Electronics Engineers (IEEE), 2003
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Pel·lícules fines
dc.subject	Porositat
dc.subject	Superconductivitat
dc.subject	Revestiments
dc.subject	Thin films
dc.subject	Porosity
dc.subject	Superconductivity
dc.subject	Coatings
dc.title	Influence of porosity on the critical currents of trifluoroacetate-MOD YBa2Cu3O7 films
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.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.

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