Macro-cracking in melt-grown YBaCuO superconductor induced by surface oxygenation

Authors have shown that oxygenation of the melt-grown YBa2Cu3O7/Y2BaCuO5 single grain superconductors is associated with the formation of macro-cracks parallel to the a/b-plane. The origin of these cracks is associated with tensile stress induced into the oxygenated surface layer due the c-lattice p...

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Bibliographic Details
Published inSuperconductor science & technology Vol. 16; no. 1; pp. 90 - 93
Main Authors Diko, P, Krabbes, G
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.01.2003
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Summary:Authors have shown that oxygenation of the melt-grown YBa2Cu3O7/Y2BaCuO5 single grain superconductors is associated with the formation of macro-cracks parallel to the a/b-plane. The origin of these cracks is associated with tensile stress induced into the oxygenated surface layer due the c-lattice parameter shortening. The critical strain calculated according to Thoules's model for the cracking of brittle films on an elastic substrate suggests that the macro-cracking starts much earlier than the formation of the homogeneous layer of equilibrium O content at the surface. 6 refs.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/16/1/316