Effect of silver addition on the field trapping properties of Gd-Ba-Cu-O bulk superconductors

S. Nariki, Naomichi Sakai, M. Matsui, Masato Murakami

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The effect of Ag addition on the field trapping properties of Gd-Ba-Cu-O bulk samples has been studied. Gd-Ba-Cu-O bulk superconductors 32 mm in diameter were melt textured by varying the amount of Ag2O in the range of 0-30 wt.%. The trapped magnetic field of Ag-free bulk sample was 1.3 T at 77 K. This value could be improved to 1.8-2.0 T with Ag addition of 10-20 wt.%. A further increase in Ag2O content degraded the field trapping ability. Ag-free bulk Gd-Ba-Cu-O exhibited the trapped field of 3.0 T at 65 K, however, the bulk was fractured at lower temperature. On the other hand, Ag-added bulk Gd-Ba-Cu-O exhibited the high trapped field value of 6.7 T at 55 K. These results indicate that the mechanical strength of the bulk Gd-Ba-Cu-O could be improved with Ag addition.

Original languageEnglish
Pages (from-to)774-778
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Issue numberPART 1
Publication statusPublished - 2002 Oct 1
Externally publishedYes



  • Ag
  • Gd-Ba-Cu-O
  • Mechanical property
  • Melt processing
  • Trapped magnetic field

ASJC Scopus subject areas

  • Condensed Matter Physics

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