Development of Gd-Ba-Cu-O bulk magnets with very high trapped magnetic field

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The field-trapping characteristics of recently developed Gd-Ba-Cu-O bulk superconductors will be reported. Large Gd-Ba-Cu-O bulk superconductors with Ag addition were melt-textured under controlled oxygen partial pressure of 1.0%. The single domain Gd-Ba-Cu-O bulk samples 24-50 mm in diameter with submicron-sized Gd2BaCuO5 inclusions could be fabricated without cracks. The field trapping abilities of the bulk samples could dramatically be enhanced through the size reduction of Gd2BaCuO5 particles and the enlargement of grain size. The trapped magnetic field of the bulk Gd-Ba-Cu-O superconductor 50 mm in diameter and 30 mm in thickness reached an extremely high value of 2.7 T at 77 K.

Original languageEnglish
Pages (from-to)631-635
Number of pages5
JournalPhysica C: Superconductivity and its Applications
Volume378-381
Issue numberPART 1
DOIs
Publication statusPublished - 2002 Oct 1
Externally publishedYes

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trapped magnetic fields
Superconducting materials
Magnets
magnets
Magnetic fields
trapping
Partial pressure
partial pressure
cracks
grain size
inclusions
Oxygen
Cracks
oxygen

Keywords

  • Critical current density
  • Gd-Ba-Cu-O
  • Melt processing
  • Trapped magnetic field

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Development of Gd-Ba-Cu-O bulk magnets with very high trapped magnetic field. / Nariki, S.; Sakai, Naomichi; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 378-381, No. PART 1, 01.10.2002, p. 631-635.

Research output: Contribution to journalArticle

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