In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 35, No. 5R ( 1996-05-01), p. 2619-
Abstract:
From the hysteresis in DC magnetization loops, we evaluated critical current densities J c and irreversibility fields B irr of Pb-doped and Pb-free Bi-2223 superconductors which were prepared from nominal compositions Bi 1.68 Pb 0.32 Sr 1.85 Ca 1.85 Cu 2.85 B x O y ( x =0, 0.01) and Bi 2 Sr 1.6 Ca 2.4 Cu 3 O 10 by different heating processes. The intragrain J c and B irr for the Pb-doped samples were larger than those of the Pb-free one, although the superconducting volume fraction and superconducting characteristics of the three samples are almost the same. This result suggests that effective pinning centers are introduced by the partial substitution of Pb for Bi in Bi-2223.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.35.2619
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1996
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7
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