Influence of residual phases on the properties of YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}

Journal Article · Mon Feb 28 23:00:00 EST 1994 · IEEE Transactions on Magnetics

DOI:https://doi.org/10.1109/20.312238· OSTI ID:40262

Sargankova, I; Diko, P; Timko, M; Slanco, P; Matas, S; Mihalik, M ^[1]; Mihalik, J ^[2]; Bunda, V ^[3]

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1. Slovak Academy of Sciences, Kosice (Slovakia). Inst. of Experimental Physics
2. Slovak Academy of Sciences, Kosice (Slovakia). Inst. of Materials Research
3. Uzhorod State Univ. (Ukraine). Dept. of Physics of Semiconductors

The partial melting in YBaCuO incompletely synthesized powders occurring at temperatures below the peritectic decomposition of the 123 (YBa{sub 2}Cu{sub 3}O{sub 7{minus}x}) compounds is related to the presence of residual phases. The results showed that the final ceramic has got a high porosity, which is independent on the temperature of sintering, the double grain size distribution and two transition temperatures up to the sintering temperature 940 C as a consequence of a higher content of the residual carbonate. The sintering at higher-temperature improved superconducting properties of ceramics. This progress is connected with cracking of large grain ceramic and with the decomposition of carbonate BaCO{sub 3}.

• OSTI ID: 40262
• Report Number(s): CONF-930860--
• Journal Information: IEEE Transactions on Magnetics, Journal Name: IEEE Transactions on Magnetics Journal Issue: 2Pt2 Vol. 30; ISSN IEMGAQ; ISSN 0018-9464
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BARIUM OXIDES
CARBON
CHEMICAL COMPOSITION
COPPER OXIDES
EXPERIMENTAL DATA
MICROSTRUCTURE
PHASE STUDIES
SUPERCONDUCTIVITY
YTTRIUM OXIDES