Enhanced flux pinning in GdBaCuO bulk superconductors by Zr dopants

C. Xu, A. Hu, M. Ichihara, Naomichi Sakai, M. Izumi, I. Hirabayashi

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We, respectively, fabricated GdBa2Cu3O7-δ (Gd123) single domain superconductors by melt growth process in air with Gd2Ba4CuZrOx (GdZr2411) and nanosize ZrO2 dopants. The microstructures and superconducting properties were investigated by scanning/transmission electron microscopy (SEM/TEM) and SQUID. GdZr2411 and BaZrO3 particles with the average size of 50 nm were observed in the GdZr2411 and nanosize ZrO2 doped Gd123 bulks by TEM, respectively. Critical current density (Jc) was enhanced up to 100,000 A/cm2 at 77 K and self-field with 0.4 mol% nano-sized ZrO2. The present study also showed that small amount GdZr2411 dopants (8 mol%, ratio to Gd123) were effective to induce a δTc-type pinning.

Original languageEnglish
Pages (from-to)367-370
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume463-465
Issue numberSUPPL.
DOIs
Publication statusPublished - 2007 Oct 1
Externally publishedYes

Fingerprint

Flux pinning
flux pinning
Superconducting materials
Doping (additives)
Transmission electron microscopy
transmission electron microscopy
Scanning electron microscopy
scanning electron microscopy
SQUIDs
critical current
current density
microstructure
Microstructure
air
Air

Keywords

  • Dopant
  • Gd123
  • GdBaCuZrO
  • Nanoparticles
  • ZrO

ASJC Scopus subject areas

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

Cite this

Enhanced flux pinning in GdBaCuO bulk superconductors by Zr dopants. / Xu, C.; Hu, A.; Ichihara, M.; Sakai, Naomichi; Izumi, M.; Hirabayashi, I.

In: Physica C: Superconductivity and its applications, Vol. 463-465, No. SUPPL., 01.10.2007, p. 367-370.

Research output: Contribution to journalArticle

Xu, C. ; Hu, A. ; Ichihara, M. ; Sakai, Naomichi ; Izumi, M. ; Hirabayashi, I. / Enhanced flux pinning in GdBaCuO bulk superconductors by Zr dopants. In: Physica C: Superconductivity and its applications. 2007 ; Vol. 463-465, No. SUPPL. pp. 367-370.
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AU - Hirabayashi, I.

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