The influence of the phase equilibria on the critical temperatures T{sub c} of the high-T{sub c} Bi-Sr-Ca-Cu-O and Y-Ba-Cu-O compounds

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Journal of Electronic Materials

DOI:https://doi.org/10.1007/BF02818069· OSTI ID:433427

Majewski, P; Rueffer, N; Aldinger, F ^[1]

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1. Max-Planck-Institut fuer Metallforschung, Stuttgart (Germany); and others

The phase equilibria of YBa{sub 2}Cu{sub 3}O{sub 7{minus}d} (123 phase) strongly influence its oxygen content and consequently its critical temperature T{sub c}. With increasing content of BaCuO{sub 2} or CuO, T{sub c} decreases. Whereas, if Y{sub 2}BaCuO{sub 5} (211 phase) is in equilibrium with the 123 phase, the oxygen content and T{sub c} of which is high. Bi{sub 2+x}(Sr,Ca){sub 3}Cu{sub 2}O{sub 8+d} exhibits an extended single phase region and its T{sub c} is strongly affected by its chemical composition. In addition, the oxygen content of the phase is a function of the temperature and influences the T{sub c} of the phase.

• Sponsoring Organization: USDOE
• OSTI ID: 433427
• Journal Information: Journal of Electronic Materials, Journal Name: Journal of Electronic Materials Journal Issue: 10 Vol. 22; ISSN JECMA5; ISSN 0361-5235
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
BISMUTH OXIDES
CALCIUM OXIDES
COPPER OXIDES
HIGH-TC SUPERCONDUCTORS
PHASE STUDIES
STRONTIUM OXIDES
TRANSITION TEMPERATURE
YTTRIUM OXIDES