Oxygenation Induced Cracking in YBCO Bulk Superconductors

Author: P. Diko

Source: Czechoslovak Journal of Physics, Volume 54, Supplement 1, December 2004 , pp. 445-448(4)

Publisher: Springer

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Abstract:

It is shown that the a/b- and c-macrocracks starts to form on the surface of YBCO bulk superconductors at the initial stage of oxygenation. Shortening of the Y123 c- and (a+b)/2-lattice parameters with increasing oxygen concentration induces tensile stresses on oxygenated layer and causes its cracking.

Keywords: TSMG YBCO superconductors; oxygenation; cracking; microstructure

Document Type: Research article

DOI: http://dx.doi.org/10.1007/s10582-004-0414-7

Affiliations: 1: Institute of Experimental Physics, Slovak Academy of Sciences, Watsonova 47, 043 53 Ko scaron ice, Slovakia,ice, Slovakia,">