Bulk and Wire Type Y–Ba–Cu Oxide Superconductor

We have fabricated the bulk Y–Ba–Cu oxide, various types of wire conductors and coils, and especially studied the critical current density J c . Large J c 's were obtained at 77K and OT: 725A/cm 2 for the non sheath wire, 560A/cm 2 for the Ag sheathed wire. However, the J c (77K) drastically de...

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Published inJapanese Journal of Applied Physics Vol. 26; no. S3-2; pp. 1205 - 1206
Main Authors Yamada, Yutaka, Fukushima, Noburu, Nakayama, Sigeo, Niu, Hiromi, Takemura, Momoko, Hayashi, Masaru, Yoshino, Hisashi, Murase, Satoru
Format Journal Article
LanguageEnglish
Published 01.01.1987
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Summary:We have fabricated the bulk Y–Ba–Cu oxide, various types of wire conductors and coils, and especially studied the critical current density J c . Large J c 's were obtained at 77K and OT: 725A/cm 2 for the non sheath wire, 560A/cm 2 for the Ag sheathed wire. However, the J c (77K) drastically decreased by a factor of hundred in a magnetic field lower than 1T while J c (4.2K) little changed up to 12T. Based on the magnetic field dependence of J c , for example, 2T of upper critical field Bc2(77K) and 47 to 80T of Bc2(4.2K) were obtained for the wire conductor.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0021-4922
1347-4065
DOI:10.7567/JJAPS.26S3.1205