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Title

Effect of current intensity on BSCCO/Ag ceramics textured by electrically assisted laser floating zone

AuthorsCosta, F. M.; Rasekh, Sh.; Ferreira, N. M.; Sotelo, A.; Diez, J. C.; Madre, M. A.
Issue Date2012
CitationICMS 2012
AbstractBi-2212+3%Ag superconducting ceramics were grown using the electrically assisted laser floating zone (EALFZ) technique. The main goal was improving the superconducting properties by applying an electrical current through the sample during the solidification process. The effect of a 100mA current intensity, in two configurations, one connecting the feed to the positive pole and the seed to the negative one, and viceversa, were studied. Once the best polarity was determined, the bars were grown with different current intensities (100-300mA) and compared with the ones grown without current. The resulting textured cylindrical bars were annealed in order to obtain the superconducting phases, followed by electrical characterization. Microstructure was analysed and correlated with the electrical properties as well as the applied current intensity in the growth process. The influence of current intensity on the sharpness of the superconducting to normal transition on the E-I curves has been determined.
DescriptionResumen del trabajo presentado a la: "3rd International Conference on Superconductivity and Magnetism" celebrada en Estambul (Turquia) del 29 de abril al 4 de mayo de 2012.
URIhttp://hdl.handle.net/10261/121857
Appears in Collections:(ICMA) Comunicaciones congresos
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