Spatial variation in magnetic properties within large-grain Nd-Ba-Cu-O/Ag

S. Takebayashi, M. Murakami

研究成果: Article査読

7 被引用数 (Scopus)

抄録

We investigate the spatial variation in the superconducting properties of Nd-Ba-Cu-O/Ag large grains fabricated by a top-seeded melt growth process in controlled partial oxygen pressures of 0.01 atm and 0.001 atm. The results of magnetic measurements show that superconducting transition temperature and critical current vary with position in a large sample. It is found that such spatial variation in magnetic properties can be reduced when a sample is grown under a low oxygen partial pressure. It is also found that trapped field distributions of Nd-Ba-Cu-O/Ag large grains reflect their spatial variations in the magnetic properties. In order to enhance the trapped field, it is necessary to optimize the local magnetic properties in the vicinity of the central axis in large-grain materials.

本文言語English
ページ(範囲)741-747
ページ数7
ジャーナルSuperconductor Science and Technology
14
9
DOI
出版ステータスPublished - 2001 9 1
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 凝縮系物理学
  • 金属および合金
  • 電子工学および電気工学
  • 材料化学

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