Influence of Zr- and Sn-doping on Sm-Ba-Cu-O filaments fabricated by a chemical solution spinning

Eriko Ban, Yumiko Ikebe, Gen Nishijima, Satoshi Awaji, Kazuo Watanabe

Research output: Contribution to journalArticlepeer-review

Abstract

The effect of Zr and Sn addition on the critical current density (J c) and the microstructure of filamentary SmBa 2Cu 3O y (Sm123) has been investigated. Samples with additions fabricated by a solution spinning method were partially melted under an atmosphere gas containing 0.1-3.0% O 2. After heat-treatment, homogeneous dispersion of fine Sm 2BaCuO 5 (Sm211) particles was observed in the Zr-doped sample. The 0.2 at% Zr-doped Sm123 showed the depressed J c value of 1.8 × 10 4A/cm 2 at 77 K and self-field compared with the undoped sample. From the J c measurement in magnetic fields, J c value higher than 10 3A/cm 2 at 77 K was maintained up to 8 T. On the other hand, 0.2 at% Sn-added sample showed high J c value of 5.0× 10 4 A/cm 2 at 77 K and self-field, and the J c value higher than 10 3A/cm 2 is maintained up to 17 T. A small amount of Sn doping was found to be effective in increasing the J c under high magnetic field and the irreversibility field of Sm123 filaments.

Original languageEnglish
Article number6104371
JournalIEEE Transactions on Applied Superconductivity
Volume22
Issue number3
DOIs
Publication statusPublished - 2012

Keywords

  • Chemical metal doping
  • Sm-Ba-Cu-O filaments
  • critical current density
  • magnetic field behavior

ASJC Scopus subject areas

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

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