Improvement to superconductivity using small amounts of Pd addition in Sm-Ba-Cu-O materials

Shih Yun Chen, In Gann Chen

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

We have studied the superconducting properties of air-processed melt-textured grown Sm-Ba-Cu-O samples with the addition of small amounts of Pd (0-1.0 wt%). The superconducting properties are enhanced with a small amount (0.1 wt%) of Pd addition, for which Tc is ∼89 K and Jc at 0 T and 77 K is 104 A cm-2. However, both Tc and Jc deteriorate as the Pd addition is further increased. In addition, Jc of Pd-doped samples exhibits anisotropic Jc(H, T) behaviour. Observation of the microstructures has shown that, as the Pd addition increases, the shape of the Sm2BaCuO5 particles (211-particles) tends to become rectangular, and the 211-particle size increases (larger than the control sample). We have observed changes in size and morphology of the 211-particles, dislocations and unidentified nanoscale defects in the Pd-doped samples, which imply that small amounts of Pd additions can affect the microstructure as well as altering the pinning mechanism.

Original languageEnglish
Pages (from-to)71-77
Number of pages7
JournalSuperconductor Science and Technology
Volume17
Issue number1
DOIs
Publication statusPublished - 2004 Jan 2

All Science Journal Classification (ASJC) codes

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

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