Pulling rate and current intensity competition in an electrically assisted laser floating zone
authors Carrasco, MF; Silva, RF; Vieira, JM; Costa, FM
nationality International
journal SUPERCONDUCTOR SCIENCE & TECHNOLOGY
keywords O SUPERCONDUCTING FIBERS; EPITAXIAL-GROWTH; FIELD; TEMPERATURE; INTERFACE; BI-2223
abstract Bi-Sr-Ca-Cu-O (BSCCO) superconducting fibres were grown using the laser floating zone technique assisted by a dc electrical current (electrically assisted laser floating zone-EALFZ process). The simultaneous effect of pulling rate and applied current intensity was evaluated on the premises of the: (i) elemental partition coefficient between solid and molten zone; (ii) phase development; (iii) crystal size and alignment degree of the primary and superconducting phases; (iv) phase transformation during heat treatment and (v) superconducting properties. The highest critical current density value (J(C) = 2240 A cm(-2)) was obtained for the fibres pulled at intermediate pulling rates (75 mm h (1)) grown under a maximum dc electric current intensity (200 mA).
publisher IOP PUBLISHING LTD
issn 0953-2048
year published 2009
volume 22
issue 6
digital object identifier (doi) 10.1088/0953-2048/22/6/065016
web of science category Physics, Applied; Physics, Condensed Matter
subject category Physics
unique article identifier WOS:000266219400030
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journal analysis (jcr 2019):
journal impact factor 3.067
5 year journal impact factor 2.933
category normalized journal impact factor percentile 64.65
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