Paper Title:
Crystal Growth Mechanism of YBCO Superconductors Prepared by Unidirectional Solidification Method
  Abstract

Y123 and Y211 powders were synthesized by solid-state reaction method. YBCO superconductor specimens were prepared by unidirectional solidification technique. The microstructure and the structural characteristics were observed by means of the optical microscope, X-ray diffraction (XRD), scanning electron microscope (SEM). The results showed that the specimen have a highly aligned structure, it was observed obvious laminated structure of Y123 crystal. Crystal growth mechanism of YBCO was investigated. Jackson's factor of Y123 crystal was calculated. Interface form was judged tentatively theoretically. The specimen was rapidly quenched by quick pulling. Solid/liquid interface structure was observed. It was concluded that a-b plane was faceted grow forms and layer growing along c-axial on a-b plane.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
2085-2090
DOI
10.4028/www.scientific.net/MSF.546-549.2085
Citation
E. Z. Gao, J. S. Li, R. Hu, H. C. Kou, H. T. Cao, P. X. Zhang, L. Zhou, "Crystal Growth Mechanism of YBCO Superconductors Prepared by Unidirectional Solidification Method", Materials Science Forum, Vols. 546-549, pp. 2085-2090, 2007
Online since
May 2007
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$32.00
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