Phase diagram of the Ba2YCu3O6-Ba2YCu3O7 system below 400°C View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

2006-11

AUTHORS

I. B. Bobylev, N. A. Zyuzeva, S. V. Sudareva, T. P. Krinitsina, L. N. Kuz’minykh, Yu. V. Blinova, E. P. Romanov

ABSTRACT

X-ray diffraction analysis and transmission electron microscopy have been used to study the low-temperature decomposition of the nonstoichiometric (in oxygen) HTSC compound Ba2YCu3O7 − δ. The phase diagram of the Ba2YCu3O6-Ba2YCu3O7 system below ≤400°C has been constructed. The temperature range corresponding to phase separation has been found to be divided into two portions. At T > 250°C, two orthorhombic phases characterized by different oxygen contents are formed; at the higher temperatures, the phase separation of the compound into a tetragonal and an orthorhombic phase takes place. The separation was also found to observe at T = 100°C; this indicates the possibility of natural aging for the Ba2YCu3O7 − δ compound at room temperature. More... »

PAGES

517-521

Identifiers

URI

http://scigraph.springernature.com/pub.10.1134/s0031918x06110093

DOI

http://dx.doi.org/10.1134/s0031918x06110093

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1047196850


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