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Trapping mode of Y2BaCuO5 and BaCeO3 inclusions within the melt-textured YBa2Cu3O7−y crystals

Published online by Cambridge University Press:  31 January 2011

Chan-Joong Kim ,
Ki-Baik Kim ,
Il-Hyun Kuk  and
Gye-Won Hong
Chan-Joong Kim
Affiliation:
Superconductivity Research Laboratory, Korea Atomic Energy Research Institute, P.O. Box 105, Yusung, Taejon, 305-600, Korea
Ki-Baik Kim
Affiliation:
Superconductivity Research Laboratory, Korea Atomic Energy Research Institute, P.O. Box 105, Yusung, Taejon, 305-600, Korea
Il-Hyun Kuk
Affiliation:
Superconductivity Research Laboratory, Korea Atomic Energy Research Institute, P.O. Box 105, Yusung, Taejon, 305-600, Korea
Gye-Won Hong
Affiliation:
Superconductivity Research Laboratory, Korea Atomic Energy Research Institute, P.O. Box 105, Yusung, Taejon, 305-600, Korea
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Extract

The particle segregation mode of two different inclusion phases of Y2BaCuO5 (Y211: a dissolving phase in a Ba–Cu–O liquid phase) and BaCeO3 (a nondissolving phase) was investigated in the melt-textured YBa2Cu3O7−y (Y123) with BaCeO3 addition (0–20 wt. %), and with 30 wt.% Y211 plus BaCeO3 (0–20 wt. %). The segregation mode of the inclusion phases is dependent not only on the type of the inclusion phases but also their amounts. When the trapped amount of the Y211 is small, they make an X-like pattern on the diagonal planes of the Y123 crystal. When the amount of the Y211 is large, meanwhile, the Y211 particles are trapped within four tetrahedral spaces (normal to the c-axis) bounded by the diagonal planes of the Y123 crystal, with no Y211 trapping within two tetrahedral spaces parallel. On the other hand, the nondissolving BaCeO3 particles make linear tracks normal to the {100} growth fronts of the Y123 crystal.

Type
Articles
Information
Journal of Materials Research , Volume 13 , Issue 2 , February 1998 , pp. 269 - 278
Copyright
Copyright © Materials Research Society 1998

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