[en] Synthesis of Bi2-xPbxSr2Ca2Cu3O10-y (x = 0 and x = 0.3) has been performed using the glass recrystallization route technique. After splat quenching, the samples were annealed at 820, 850 or 870-degrees-C for 96 or 144 h (with one intermediary grinding). High-resolution polarization micrographs and electrical (and magnetic susceptibility) measurements have been taken. Various growth mechanisms can thus be checked, and the physical properties are studied in relation to the microstructure. It is found that the 2223 phase does not crystallize directly from the amorphous one but results from a dissolution-reprecipitation process. The stability of the 2212 phase is emphasized. The 2201 phase precipitates at high temperature and rapidly reacts with the melt to form the 2223 phase. The kinetics of the lead-substituted sample seems to be controlled by the Ca2PbO4 phase. which acts as a flux.
Disciplines :
Chemistry
Author, co-author :
Cloots, Rudi ; Université de Liège - ULiège > Département de chimie (sciences) > LCIS - GreenMAT
Romain, Anne-Claude ; Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement
Rulmont, André ; Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Diko, P.
Duvigneaud, P. H.
Hannay, C.
Gillet, François ; Université de Liège - ULiège > Département des sciences de la vie > Génétique
Godelaine, P. A.
Ausloos, Marcel ; Université de Liège - ULiège > Département de physique > Département de physique
Language :
English
Title :
STUDY OF THE CRYSTALLIZATION PROCESS IN BI2-XPBXSR2CA2CU3O10-Y GLASS SYSTEMS - OPTICAL POLARIZED-LIGHT MICROSCOPY, ELECTRICAL AND MAGNETIC-PROPERTIES
Publication date :
1993
Journal title :
Superconductor Science and Technology
ISSN :
0953-2048
eISSN :
1361-6668
Publisher :
Institute of Physics Publishing, Bristol, United Kingdom
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