In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 26, No. 5A ( 1987-05-01), p. L865-
Abstract:
We have fabricated wire type Y-Ba-Cu oxide superconductor by powder metallurgy technique. A large critical current density J c of 7.25 × 10 2 A/cm 2 at 77 K and 0 T and the resistive T c transition of 89 K to 87 K were obtained for the wire type conductor heat treated without Cu sheath. However, the J c (77 K) drastically decreased by a factor of 200, applying a magnetic field of 1 T. On the contrary, J c (4.2 K) little changed; 1.63 × 10 2 A/cm 2 at 1 T and 1.33 × 10 2 A/cm 2 at 12 T. Based on the magnetic field dependence of J c , we estimate upper critical field B c 2 (i.e. corresponding to B c 2 defined by T c (offset)) and GL coherence length ζ.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.26.L865
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1987
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
