Effect of Dy2BaCuO5 addition on trapped magnetic fields in Dy-Ba-Cu-O bulk superconductors

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4 Citations (Scopus)

Abstract

The effect of Dy2BaCuO5 (Dy211) contents on the field trapping properties of Ag-added DyBa2Cu3Oy (Dy123) 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 trapped magnetic fields were measured as a function of external field and compared with the Jc-B properties, in that a similar field dependency was observed. In the case of the Dy123 bulk with excess 5 mol% Dy211, the peak was found at around 0.5-1.5 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. This result reflects the secondary peak effect in Jc-B properties of the bulk samples. On the other hand, the trapped field of Dy123 bulk with excess 40 mol% of Dy211 exhibited 1.4 T when the applied field was removed. This value monotonously decreased with increasing external field, since this sample showed no secondary peak effect in Jc-B properties.

Original languageEnglish
Pages (from-to)315-319
Number of pages5
JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
Volume66
Issue number4
Publication statusPublished - 2002 Apr
Externally publishedYes

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trapped magnetic fields
Superconducting materials
Magnetic fields
Crystals
Air
seeds
trapping
air
crystals

Keywords

  • Critical current density
  • DyBaCuO
  • DyBaCu O
  • Melt-growth
  • Peak effect
  • Superconductor
  • Trapped magnetic field

ASJC Scopus subject areas

  • Metals and Alloys

Cite this

@article{c2e236dae2d34878917a01402a9a25da,
title = "Effect of Dy2BaCuO5 addition on trapped magnetic fields in Dy-Ba-Cu-O bulk superconductors",
abstract = "The effect of Dy2BaCuO5 (Dy211) contents on the field trapping properties of Ag-added DyBa2Cu3Oy (Dy123) 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 trapped magnetic fields were measured as a function of external field and compared with the Jc-B properties, in that a similar field dependency was observed. In the case of the Dy123 bulk with excess 5 mol{\%} Dy211, the peak was found at around 0.5-1.5 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. This result reflects the secondary peak effect in Jc-B properties of the bulk samples. On the other hand, the trapped field of Dy123 bulk with excess 40 mol{\%} of Dy211 exhibited 1.4 T when the applied field was removed. This value monotonously decreased with increasing external field, since this sample showed no secondary peak effect in Jc-B properties.",
keywords = "Critical current density, DyBaCuO, DyBaCu O, Melt-growth, Peak effect, Superconductor, Trapped magnetic field",
author = "Shinya Nariki and Naomichi Sakai and Masato Murakami",
year = "2002",
month = "4",
language = "English",
volume = "66",
pages = "315--319",
journal = "Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals",
issn = "0021-4876",
publisher = "Japan Institute of Metals (JIM)",
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}

TY - JOUR

T1 - Effect of Dy2BaCuO5 addition on trapped magnetic fields in Dy-Ba-Cu-O bulk superconductors

AU - Nariki, Shinya

AU - Sakai, Naomichi

AU - Murakami, Masato

PY - 2002/4

Y1 - 2002/4

N2 - The effect of Dy2BaCuO5 (Dy211) contents on the field trapping properties of Ag-added DyBa2Cu3Oy (Dy123) 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 trapped magnetic fields were measured as a function of external field and compared with the Jc-B properties, in that a similar field dependency was observed. In the case of the Dy123 bulk with excess 5 mol% Dy211, the peak was found at around 0.5-1.5 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. This result reflects the secondary peak effect in Jc-B properties of the bulk samples. On the other hand, the trapped field of Dy123 bulk with excess 40 mol% of Dy211 exhibited 1.4 T when the applied field was removed. This value monotonously decreased with increasing external field, since this sample showed no secondary peak effect in Jc-B properties.

AB - The effect of Dy2BaCuO5 (Dy211) contents on the field trapping properties of Ag-added DyBa2Cu3Oy (Dy123) 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 trapped magnetic fields were measured as a function of external field and compared with the Jc-B properties, in that a similar field dependency was observed. In the case of the Dy123 bulk with excess 5 mol% Dy211, the peak was found at around 0.5-1.5 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. This result reflects the secondary peak effect in Jc-B properties of the bulk samples. On the other hand, the trapped field of Dy123 bulk with excess 40 mol% of Dy211 exhibited 1.4 T when the applied field was removed. This value monotonously decreased with increasing external field, since this sample showed no secondary peak effect in Jc-B properties.

KW - Critical current density

KW - DyBaCuO

KW - DyBaCu O

KW - Melt-growth

KW - Peak effect

KW - Superconductor

KW - Trapped magnetic field

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