Pinning mechanism of the high critical current density Sm-Ba-Cu-O superconductors with Sm210/Pd/Pt/CeO2 addition

Shih Yun Chen, In Gann Chen, Mow Kuen Wu

Research output: Contribution to journalConference articlepeer-review

2 Citations (Scopus)

Abstract

The superconducting properties and the pinning mechanisms of air-processed melt-textured grown Sm-Ba-Cu-O samples with the addition of small amounts of Pd (0.5wt%), Pt (0.5wt%) and CeO2 (1.0wt%) were studied. The superconducting properties were enhanced by these additions, especially in co-doped samples. With co-doping of Pd/Pt or Pd/CeO2, the samples exhibited a high Tc (∼91 K) and a high Jc (0 T, 77 K) ∼ 104 A/cm2. Pinning forces vs magnetic field studies indicated that these samples have different pinning mechanisms from the un-doped sample. Observations of the microstructures showed that the Pt or CeO2 addition reduced the sizes of the 211-particles significantly. EPMA results showed that the chemical distributions of these additions are different. Furthermore, TEM/EDS investigations found that the compositional fluctuation of the matrix in the sample co-doped with Pd/Pt is larger than in the sample co-doped with Pd/CeO2.

Original languageEnglish
Pages (from-to)3087-3090
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume13
Issue number2
DOIs
Publication statusPublished - 2003 Jul 1
Event2002 Applied Superconductivity Conference - Houston, TX, United States
Duration: 2002 Aug 42002 Aug 9

All Science Journal Classification (ASJC) codes

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

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