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Direct identification of extended defects as vortex pinning centers in melt textured YBa/sub 2/Cu/sub 3/O/sub 7/-Y/sub 2/BaCuO/sub 5/ composites

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hdl:2117/86320

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Puig Molina, Teresa
Obradors i Berenguer, Francesc Xavier
Martinez, B
Sandiumenge, F
O'Callaghan Castellà, Juan ManuelMés informacióMés informacióMés informació
Rabier, J
Document typeArticle
Defense date1999-06
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Single domain YBa/sub 2/Cu/sub 3/O/sub 7/-Y/sub 2/BaCuO/sub 5/ melt textured ceramic composites have revealed a very rich microstructure, which has usually impeded, by using standard measurements, to evaluate the contribution of each defect to the enhancement of the critical current. We have measured the in-plane magnetoresistance anisotropy and the anisotropic in-plane inductive critical currents and we show that together with the microstructural TEM analysis, the contribution of the different extended pinning centers can be separated. These results have allowed us to infer the kind of microstructure modifications required to improve the critical current. In particular, we present an isostatic pressing deformation technique as a very promising post-processing treatment to strongly increase the critical currents of these composites
CitationPuig, T., Obradors I, F., Martinez, B., Sandiumenge, F., O'callaghan, J., Rabier, J. Direct identification of extended defects as vortex pinning centers in melt textured YBa/sub 2/Cu/sub 3/O/sub 7/-Y/sub 2/BaCuO/sub 5/ composites. "IEEE transactions on applied superconductivity", Juny 1999, vol. 9, núm. 2, p. 2663-2666. 
URIhttp://hdl.handle.net/2117/86320
DOI10.1109/77.785034
ISSN1051-8223
Publisher versionhttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=785034
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  • Departament de Teoria del Senyal i Comunicacions - Articles de revista [2.351]
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