The effect of temperature gradient on the morphology of YBCO bulk superconductors by melt texture growth processing

The effects of lateral temperature gradient (TG) on the macrostructure and levitation force of YBCO bulk superconductors have been investigated. The results indicate that a positive lateral TG is more effective to depress the randomly nucleation of Y123 grain number. The levitation force of samples...

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Bibliographic Details
Published in:Journal of alloys and compounds 2006-05, Vol.415 (1), p.276-279
Main Authors: Yang, W.M., Zhou, L., Feng, Y., Zhang, P.X., Zhang, C.P.
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Granular, melt-textured, amorphous and composite superconductors
Inhomogeneous superconductors and superconducting systems
Levitation force
Melt textured
Physics
Superconductivity
Temperature gradient
YBCO superconductors
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Summary:The effects of lateral temperature gradient (TG) on the macrostructure and levitation force of YBCO bulk superconductors have been investigated. The results indicate that a positive lateral TG is more effective to depress the randomly nucleation of Y123 grain number. The levitation force of samples fabricated in this kind of furnace is about 2.5 times higher than that of samples fabricated in furnace without a positive lateral TG. A single domain YBCO bulk (ϕ30 mm) with levitation force of 94 N has been fabricated.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2005.08.007