Trapped field characteristics of stacked YBCO thin plates for compact NMR magnets: Spatial field distribution and temporal stability

Seungyong Hahn, Seok Beom Kim, Min Cheol Ahn, John Voccio, Juan Bascunan, Yukikazu Iwasa

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

This paper presents experimental and analytical results of trapped field characteristics of a stack of square YBCO thin film plates for compact NMR magnets. Each YBCO plate, 40 mm× 40 mm× 0.08 mm, has a 25-mm diameter hole at its center. A total of 500 stacked plates were used to build a 40-mm long magnet. Its trapped field, in a bath of liquid nitrogen, was measured for spatial field distribution and temporal stability. Comparison of measured and analytical results is presented: the effects on trapped field characteristics of the unsaturated nickel substrate and the non-uniform current distribution in the YBCO plate are discussed.

Original languageEnglish
Article number5439792
Pages (from-to)1037-1040
Number of pages4
JournalIEEE Transactions on Applied Superconductivity
Volume20
Issue number3
DOIs
Publication statusPublished - Jun 1 2010

Keywords

  • Compact NMR
  • Spatial homogeneity
  • Temporal stability
  • Trapped field
  • YBCO plate

ASJC Scopus subject areas

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

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