Modeling of peritectic YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} growth using transparent organic analogues

Journal Article · Fri Aug 01 04:00:00 EDT 1997 · Journal of Materials Research

DOI:https://doi.org/10.1557/JMR.1997.0269· OSTI ID:542183

Terborg, R; Schmitz, G J ^[1]

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1. ACCESS e.V. Intzestr. 5, D-52072 Aachen (Germany)

Transparent organic analogues were directionally solidified to investigate, via in-situ observation, the peritectic reaction occurring in the YBa{sub 2}Cu{sub 3}O{sub 7{minus}x} YBCO-superconductor system. Nucleation and growth of peritectic and properitectic phases were examined with respect to similarities with the solidification of the YBCO superconductor. The selected organic system, salicylic acid-acetamide, turned out to match the requirements concerning crystal shape, small nucleation rate of the peritectic phase on the properitectic phase, existence of stoichiometric phases with no solubility limits, common and undercooling ability of the peritectic phase. Several features of YBCO growth which were previously deduced only from metallographic cross sections could be verified by direct observation. The organic analogue system will also be used in the future to improve numerical simulations. {copyright} {ital 1997 Materials Research Society.}

• OSTI ID: 542183
• Journal Information: Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 8 Vol. 12; ISSN JMREEE; ISSN 0884-2914
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
COPPER OXIDES
CRYSTAL GROWTH
HIGH-TC SUPERCONDUCTORS
NUCLEATION
ORGANIC COMPOUNDS
PHASE STUDIES
SOLIDIFICATION
STOICHIOMETRY
YTTRIUM OXIDES