Enhanced Superconducting Properties of Air-Processed GdBa 2Cu 3O 7-δ Single Domains with BaCO 3/BaCuO 2-x Addition

Caixuan Xu, Anming Hu, Naomichi Sakai, Izumi Hirabayashi, Mitsuru Izumi

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Single domain GdBa 2Cu 7-δ (Gd123) bulk superconductors were fabricated in air by top-seeding melt-texture growth. Performance of the air-processed Gd123 was successfully enhanced by addition of both BaCO 3 and BaCuO 2-x , which suppress the formation of Gd 1+x Ba 2-x Cu 3O 7-δ solid solutions. The optimum doping amount ranges from 0.05 to 0.15, M BaCO 3 and 0.05 to 0.1, M BaCuO 2-x per molar Gd123. The distribution of the second phase particles was observed by scanning electron microscopy. A narrow band formed by Gd 2BaCuO 5 particle concentration appeared around the seeding zone in both a-b plane and c-growth sector in Gd123 single grain. Trapped magnetic field density reached 0.67, T for sample with 24 mm in diameter and 8, mm in thickness and a high critical current density J c up to 91,200, A/cm 2 was achieved at 77, K under self-field.

Original languageEnglish
Pages (from-to)309-314
Number of pages6
JournalJournal of Superconductivity and Novel Magnetism
Volume20
Issue number4
DOIs
Publication statusPublished - 2007 May 1
Externally publishedYes

Fingerprint

inoculation
trapped magnetic fields
air
Air
Superconducting materials
narrowband
Solid solutions
critical current
solid solutions
sectors
textures
Textures
Doping (additives)
Magnetic fields
current density
Scanning electron microscopy
scanning electron microscopy

Keywords

  • Air processing
  • BaCO /BaCuO
  • Critical current density J .
  • Gd Ba Cu O solid solutions

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Enhanced Superconducting Properties of Air-Processed GdBa 2Cu 3O 7-δ Single Domains with BaCO 3/BaCuO 2-x Addition. / Xu, Caixuan; Hu, Anming; Sakai, Naomichi; Hirabayashi, Izumi; Izumi, Mitsuru.

In: Journal of Superconductivity and Novel Magnetism, Vol. 20, No. 4, 01.05.2007, p. 309-314.

Research output: Contribution to journalArticle

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