TY - JOUR
T1 - Peak effect in field trapping properties of large grain Dy-Ba-Cu-O/Ag bulk superconductors
AU - Nariki, S.
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.
PY - 2002/10/1
Y1 - 2002/10/1
N2 - The effect of Dy2BaCuO5 (Dy211) contents on the field trapping properties of Ag-added Dy-Ba-Cu-O single domain bulk has been investigated. The Dy-Ba-Cu-O/Ag bulks 32 mm in diameter with different Dy211 contents were fabricated in air with the top-seeded melt-growth method using NdBa2Cu3O7 seed crystal. The field dependence of their trapped magnetic fields was measured using a Hall probe sensor at 77 K. In the case of the Dy-Ba-Cu-O bulk with excess 5 mol% of Dy211, the peak was found at around 1.5 T of external field in the trapped field measurement at 77 K. The value of trapped field was 1.2 T at the peak field. On the other hand, the Dy-Ba-Cu-O bulk with excess 40 mol% of Dy211 did not exhibit the peak effect. These results reflect the secondary peak effect in Jc-B properties of the bulk samples.
AB - The effect of Dy2BaCuO5 (Dy211) contents on the field trapping properties of Ag-added Dy-Ba-Cu-O single domain bulk has been investigated. The Dy-Ba-Cu-O/Ag bulks 32 mm in diameter with different Dy211 contents were fabricated in air with the top-seeded melt-growth method using NdBa2Cu3O7 seed crystal. The field dependence of their trapped magnetic fields was measured using a Hall probe sensor at 77 K. In the case of the Dy-Ba-Cu-O bulk with excess 5 mol% of Dy211, the peak was found at around 1.5 T of external field in the trapped field measurement at 77 K. The value of trapped field was 1.2 T at the peak field. On the other hand, the Dy-Ba-Cu-O bulk with excess 40 mol% of Dy211 did not exhibit the peak effect. These results reflect the secondary peak effect in Jc-B properties of the bulk samples.
KW - Critical current density
KW - Dy-Ba-Cu-O
KW - Melt processing
KW - Trapped magnetic field
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U2 - 10.1016/S0921-4534(02)01538-1
DO - 10.1016/S0921-4534(02)01538-1
M3 - Article
AN - SCOPUS:0036787334
VL - 378-381
SP - 759
EP - 763
JO - Physica C: Superconductivity and its Applications
JF - Physica C: Superconductivity and its Applications
SN - 0921-4534
IS - PART 1
ER -