TY - JOUR
T1 - Superconducting properties of melt-textured RE-Ba-Cu-O (RE
T2 - Proceedings of the 15th International Symposium on Superconduc
AU - Nariki, S.
AU - Sakai, N.
AU - Murakami, M.
N1 - Funding Information:
This work is supported by the New Energy and Industrial Technology Development Organization (NEDO) as Collaborative Research and Development of Fundamental Technologies for Superconductivity Applications.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2003/10
Y1 - 2003/10
N2 - We investigated the effect of RE2BaCuO5 (RE211) contents on the superconducting properties of melt-textured RE-Ba-Cu-O bulk superconductors (RE: Ho, Er and Y). REBa2Cu3Oy (RE123) samples containing 5-40 mol% of RE211 were fabricated with the cold-seeding method in air using an Nd123 bulk seed crystal. The superconducting properties of the Ho-Ba-Cu-O samples were strongly affected by the Ho211 content and the oxygen-annealing temperature. In the Jc-B curves of the Ho-Ba-Cu-O samples with low-Ho211 contents, the secondary peak effect was clearly observed. The peak position shifted to lower fields with increasing oxygen-annealing temperature, presumably due to an increase in oxygen-vacancies. The secondary peak effect was also found in the Er- and Y-Ba-Cu-O samples with 5 mol% of RE211.
AB - We investigated the effect of RE2BaCuO5 (RE211) contents on the superconducting properties of melt-textured RE-Ba-Cu-O bulk superconductors (RE: Ho, Er and Y). REBa2Cu3Oy (RE123) samples containing 5-40 mol% of RE211 were fabricated with the cold-seeding method in air using an Nd123 bulk seed crystal. The superconducting properties of the Ho-Ba-Cu-O samples were strongly affected by the Ho211 content and the oxygen-annealing temperature. In the Jc-B curves of the Ho-Ba-Cu-O samples with low-Ho211 contents, the secondary peak effect was clearly observed. The peak position shifted to lower fields with increasing oxygen-annealing temperature, presumably due to an increase in oxygen-vacancies. The secondary peak effect was also found in the Er- and Y-Ba-Cu-O samples with 5 mol% of RE211.
KW - Critical current density
KW - Er-Ba-Cu-O
KW - Ho-Ba-Cu-O
KW - Melt processing
KW - Secondary peak effect
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U2 - 10.1016/S0921-4534(03)01006-2
DO - 10.1016/S0921-4534(03)01006-2
M3 - Conference article
AN - SCOPUS:0041782764
VL - 392-396
SP - 516
EP - 520
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 1
Y2 - 11 November 2002 through 13 November 2002
ER -