Structure degradation and conductivity variation in the perovskite phase of yttrium-barium ceramics View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2002-02

AUTHORS

M. U. Kalanov, É. M. Ibragimova

ABSTRACT

It is found that the perovskite phase of yttrium-barium ceramics with the composition [(Y,Ba)CuO3−Δ/3]3 under normal conditions is metastable and exhibits atmospheric degradation with time. This degradation results in the formation of an orthorhombic YBa2Cu3O7−δ phase characterized by the superconducting transition at Tc=91 K. As a result of the degradation, the conductivity type changes from mixed metallic-semiconductor (ρ(T) = const) to purely metallic in the temperature interval from 100 to 300 K. More... »

PAGES

148-150

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/1.1458518

DOI

http://dx.doi.org/10.1134/1.1458518

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1011791555


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