Peak effect in field trapping properties of large grain Dy-Ba-Cu-O/Ag bulk superconductors

被引：20

作者：

Nariki, S ^{[1
]}

Murakami, M ^{[1
]}

机构：

[1] ISTEC, Superconduct Res Lab, Minato Ku, Tokyo 1050023, Japan

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 2002年 / 378卷

关键词：

melt processing; trapped magnetic field; critical current density; Dy-Ba-Cu-O;

D O I：

10.1016/S0921-4534(02)01538-1

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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 J(c)-B properties of the bulk samples. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：759 / 763

页数：5

共 12 条

[1]

Processing and properties of large grain (RE)BCO [J].

Cardwell, DA .

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY, 1998, 53 (1-2) :1-10

[2]

Applications of superconducting permanent magnets driven by static and pulsed fields [J].

Mizutani, U ;

Ikuta, H ;

Hosokawa, T ;

Ishihara, H ;

Tazoe, K ;

Oka, T ;

Itoh, Y ;

Yanagi, Y ;

Yoshikawa, M .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2000, 13 (06) :836-840

[3]

Melt-processed light rare earth element-Ba-Cu-O [J].

Murakami, M ;

Sakai, N ;

Higuchi, T ;

Yoo, SI .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 1996, 9 (12) :1015-1032

[4]

The trapped field of YBCO bulk superconducting magnets [J].

Nagashima, K ;

Higuchi, T ;

Sok, J ;

Yoo, SI ;

Fujimoto, H ;

Murakami, M .

CRYOGENICS, 1997, 37 (10) :577-581

[5]

Nariki S, 2002, AIP CONF PROC, V614, P686, DOI 10.1063/1.1472603

[6]

Superconducting properties of Dy-Ba-Cu-O bulk superconductors [J].

Nariki, S ;

Murakami, M .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2002, 15 (05) :786-790

[7]

Enhancement of critical current density of Dy-Ba-Cu-O bulk superconductor by the refinement of Dy211 particles [J].

Nariki, S ;

Sakai, N ;

Murakami, M .

PHYSICA C, 2001, 357 (SUPPL. 2) :814-816

[8]

Processing of GdBa2Cu3O7-y bulk superconductor and its trapped magnetic field [J].

Nariki, S ;

Sakai, N ;

Murakami, M .

PHYSICA C, 2001, 357 (SUPPL. 2) :629-634

[9]

NARIKI S, 2001, MAT RES SOC S P, V659

[10]

NARIKI S, 2001, 2001 SPRING M CRYOG, P200

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