Electrical, Magnetic and Superconducting Properties of High-Tc Superconductor (Y, Sc)-(Ba, Sr)-Cu Oxide

Autor:	Tatsumi Hioki, Yoshio Kiyoshima, Akio Oota
Rok vydání:	1987
Předmět:	Superconductivity High-temperature superconductivity Condensed matter physics Chemistry General Engineering Oxide General Physics and Astronomy Magnetic susceptibility law.invention Magnetization chemistry.chemical_compound Meissner effect Electrical resistivity and conductivity law Critical field
Zdroj:	Japanese Journal of Applied Physics. 26:L1356
ISSN:	1347-4065 0021-4922
DOI:	10.1143/jjap.26.l1356
Popis:	The superconductivity above 77 K occurs in (Y1-x Sc x )0.4 (Ba1-x Sr x )0.6Cu oxide with 0≤x≤0.2, where T c decreases from 92 to 83 K by increasing x to 0.2. The samples with 0≤x≤0.2, which are nearly single phase of the YBa2Cu3O7-δ structure, have a sharp superconducting transition within 1 K, critical current density above 100 A/ cm2 at 77 K and the Meissner flux expulsion above 25% just below T c. Their susceptibility data in normal state are analyzed by the sum of the Pauli susceptibility and the Curie-Weiss contribution. The former is suppressed by an increase of the parameter x, while the latter is enhanced.
Databáze:	OpenAIRE
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