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336033 
Journal Article 
Study of the variation of the E-I curves in the superconducting to normal transition of Ni-2212 textured ceramics by Pb addition 
Sotelo, A; Mora, M; Madre, MA; Amaveda, H; Diez, JC; Ancurel, LA; Mayoral, MC 
2006 
45 
3 
228-232 
Vitreous cylinders with compositions Bi[sup]2-x[/sup]Pb[sup]x[/sup]Sr[sup]2[/sup]CaCu[sup]2[/sup]O[sup]v[/sup], (x = 0, 0.2, 0.4 and 0.6) were prepared and used as precursors to fabricate textured bars through a laser floating zone melting method (LFZ). The resulting textured cylindrical bars were annealed, followed by their electrical characterization. The microstructure was determined and correlated with the electrical measured properties. The influence of Pb doping on the sharpness of the superconducting to normal transition on the E-I curves has been determined. The sharpest transitions have been obtained for samples doped with 0.4Pb. (English) 
Bi-2212; superconductivity; electrical properties; Pb; Microscopie électronique balayage; Transition supraconductrice; Addition plomb; Effet impureté; Solution solide; Propriété électrique; Caractérisation; Texture; Chauffage laser; Zone flottante; Cristallisation; Etat vitreux; Précurseur; Fabrication; Bismuth Calcium Cuivre Plomb Strontium Oxyde Mixte; Cuivre oxyde; Cuprate; Calcium oxyde; Strontium oxyde; Plomb oxyde; Bismuth oxyde; Céramique électronique; Supraconducteur haute température; Céramique oxyde; Etude expérimentale; Bi Ca Cu O Pb Sr; Bi2-xPbxSr2CaCu2Oy; Scanning electron microscopy; Superconducting transition; Lead addition; Impurity effect; Solid solution; Characterization; Laser heating; Floating zone; Crystallization; Glassy state; Precursor; Manufacturing; Bismuth Calcium Copper Lead Strontium Oxides Mixed; Copper oxide; Cuprates; Calcium oxide; Strontium oxide; Lead oxide; Bismuth oxide; Electroceramics; High temperature superconductor; Oxide ceramics; Experimental study; Microscopía electrónica barrido; Transición superconductora; Adición plomo; Efecto impureza; Solución sólida; Propiedad eléctrica; Caracterización; Textura; Calentamiento láser; Zona flotante; Cristalización; Estado vitreo; Fabricación; Bismuto Calcio Cobre Plomo Estroncio Óxido Mixto; Cobre óxido; Calcio óxido; Estroncio óxido; Plomo óxido; Bismuto óxido; Cerámica electrónica; Supraconductor alta temperatura; Cerámica óxido; Estudio experimental