Top-seeded infiltration growth of Y-Ba-Cu-O bulk superconductors

S. Umakoshi, Y. Ikeda, A. Wongsatanawarid, C. J. Kim, Masato Murakami

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A top-seeded melt-growth (TSMG) process is widely used to fabricate single domain YBa2Cu3Oy (Y-Ba-Cu-O) bulk superconductors. Pores are often found in the TSMG-processed Y-Ba-Cu-O samples due to the oxygen gas evolution during the molten stage. Recently developed liquid infiltration growth (LIG) process is known to be effective in suppressing the pore evolution and in refining the size of Y2BaCuO5 (Y211) particles dispersed in YBa2Cu3Oy matrix. The LIG process utilizes the liquid (Ba3Cu5O8) infiltration into a pre- sintered Y211 contact and slow cooling through a peritectic temperature. In this study, we fabricated bulk Y-Ba-Cu-O superconductors by the LIG process combined with top-seeding with SmBa 2Cu3Oy seed and confirmed that a single-domain bulk can be produced. Trapped field measurements however showed that some distortion in the field distribution was observed in the region near the seed crystal, which was attributed to Y211 density and its relatively large size.

Original languageEnglish
Pages (from-to)843-845
Number of pages3
JournalPhysica C: Superconductivity and its Applications
Volume471
Issue number21-22
DOIs
Publication statusPublished - 2011 Nov

Fingerprint

infiltration
Infiltration
Superconducting materials
Liquids
liquids
seeds
gas evolution
porosity
YBCO superconductors
refining
inoculation
Refining
Seed
Molten materials
Gases
Oxygen
Cooling
cooling
Crystals
oxygen

Keywords

  • Bulk YBCO
  • Liquid infiltration growth
  • YO additive

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Energy Engineering and Power Technology
  • Electronic, Optical and Magnetic Materials

Cite this

Top-seeded infiltration growth of Y-Ba-Cu-O bulk superconductors. / Umakoshi, S.; Ikeda, Y.; Wongsatanawarid, A.; Kim, C. J.; Murakami, Masato.

In: Physica C: Superconductivity and its Applications, Vol. 471, No. 21-22, 11.2011, p. 843-845.

Research output: Contribution to journalArticle

Umakoshi, S. ; Ikeda, Y. ; Wongsatanawarid, A. ; Kim, C. J. ; Murakami, Masato. / Top-seeded infiltration growth of Y-Ba-Cu-O bulk superconductors. In: Physica C: Superconductivity and its Applications. 2011 ; Vol. 471, No. 21-22. pp. 843-845.
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