The effect of annealing temperature on the transport properties of BSCCO fibres grown by LFZ and EALFZ
authors Carrasco, MF; Monteiro, JH; Amaral, VS; Silva, RF; Vieira, JM; Costa, FM
editors Vilarinho, PM
nationality International
journal ADVANCED MATERIALS FORUM III, PTS 1 AND 2
author keywords BSCCO fibre; superconductors; laser floating zone
keywords SUPERCONDUCTORS; MAGNETIZATION
abstract Superconducting fibres of Bi-Sr-Ca-Cu-O system were grown by the conventional Laser Floating Zone (LFZ) process and by the new technique of Electrical Assisted Laser Floating Zone (EALFZ). The presence of an electric field during solidification process significantly changes the fibre microstructure with Bi2Sr2Ca2Cu3O10 nominal composition. The higher cristallinity of the as-grown EALFZ fibres, resulting from the current application during solidification, leads to a transformation rate enhancement during subsequent annealing. A strong correlation between the transport properties and the final microstructure of the annealed fibres is observed. The highest critical current density of the EALFZ fibres is obtained after heat treatment at 845 degrees C while for the LFZ ones similar values are obtained only after annealing at 860 degrees C.
publisher TRANS TECH PUBLICATIONS LTD
issn 0255-5476
year published 2006
volume 514-516
beginning page 338
ending page 342
web of science category Materials Science, Multidisciplinary
subject category Materials Science
unique article identifier WOS:000238056400070

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