Critical current characteristics in superconducting Y-Ba-Cu-O prepared by the melt process

Critical current densities in superconducting Y-Ba-Cu-O specimens with different sizes of 211 particles prepared by the melt process were measured under various magnetic fields and temperatures. Discussion is given on the flux pinning properties by 211 particles and background pinning centers. At te...

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Bibliographic Details
Published inJapanese Journal of Applied Physics Vol. 30; no. 3; pp. L342 - L345
Main Authors MATSUSHITA, T, OTABE, E. S, NAORONG NI, KIMURA, K, MORITA, M, TANAKA, M, KIMURA, M, MIYAMOTO, K, SAWANO, K
Format Journal Article
LanguageEnglish
Published Tokyo Japanese journal of applied physics 01.03.1991
Subjects
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Exact sciences and technology
Physics
Properties of type I and type II superconductors
Superconductivity
Superconducting weak link
Temperature
Flux pinning
Critical current
Transition metal Compounds
Experimental study
Magnetic field
Barium Copper Yttrium Oxides Mixed
High temperature superconductor
Low temperature
Inorganic compound
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Summary:Critical current densities in superconducting Y-Ba-Cu-O specimens with different sizes of 211 particles prepared by the melt process were measured under various magnetic fields and temperatures. Discussion is given on the flux pinning properties by 211 particles and background pinning centers. At temperatures above 60 K, 211 particles are expected to be dominant pinning centers. A rapid degradation of the critical current density with elevating temperature at low temperatures below 25 K seems to be attributed to weak links in specimens.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0021-4922
1347-4065
DOI:10.1143/jjap.30.l342