Insertion of nanoparticulate artificial pinning centres in YBa 2Cu3O7-x films by laser ablation of a Y 2O3-surface modified target

P. Mele, K. Matsumoto, T. Horide, A. Ichinose, Masashi Mukaida, Y. Yoshida, S. Horii

Research output: Contribution to journalArticle

53 Citations (Scopus)

Abstract

YBa2Cu3O7-x+Y2O3 (YBCO+Y2O3) mixed films were prepared on SrTiO 3/MgO substrates by pulsed-laser deposition from a YBCO target with a thin Y2O3 sector on the top. The pinning properties for the mixed YBCO+Y2O3 thin film were strongly enhanced, especially at the temperatures lower than 77K: the maximum global pinning forces FP for the Y2O3 doped sample are 7.8GNm -3 near 2T at 77K, 54.5GNm-3 near 4T at 65K, and 189GNm-3 near 9T at 40K. In the Y2O3-added samples, except for the plane configuration, the angular dependence of J c showed a plateau, due to the flux pinning by isotropic pinning centres. Y2O3 nanoparticles randomly dispersed inside the YBCO matrix were consistently observed in the cross-sectional TEM images.

Original languageEnglish
Article number006
Pages (from-to)616-620
Number of pages5
JournalSuperconductor Science and Technology
Volume20
Issue number7
DOIs
Publication statusPublished - Jul 1 2007

Fingerprint

Flux pinning
Laser ablation
Pulsed laser deposition
laser ablation
insertion
Nanoparticles
Transmission electron microscopy
Thin films
Substrates
flux pinning
Temperature
pulsed laser deposition
plateaus
sectors
nanoparticles
transmission electron microscopy
matrices
thin films
configurations
barium copper yttrium oxide

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Materials Chemistry
  • Electrical and Electronic Engineering

Cite this

Insertion of nanoparticulate artificial pinning centres in YBa 2Cu3O7-x films by laser ablation of a Y 2O3-surface modified target. / Mele, P.; Matsumoto, K.; Horide, T.; Ichinose, A.; Mukaida, Masashi; Yoshida, Y.; Horii, S.

In: Superconductor Science and Technology, Vol. 20, No. 7, 006, 01.07.2007, p. 616-620.

Research output: Contribution to journalArticle

Mele, P. ; Matsumoto, K. ; Horide, T. ; Ichinose, A. ; Mukaida, Masashi ; Yoshida, Y. ; Horii, S. / Insertion of nanoparticulate artificial pinning centres in YBa 2Cu3O7-x films by laser ablation of a Y 2O3-surface modified target. In: Superconductor Science and Technology. 2007 ; Vol. 20, No. 7. pp. 616-620.
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