Effects of subgrains on critical current properties in melt-processed RE-Ba-Cu-O bulk superconductors

研究成果: Article査読

7 被引用数 (Scopus)

抄録

We have studied the microstructures of subgrains in large single-domain RE-Ba-Cu-O bulk superconductors and their effects on superconducting properties. Subgrains with high misorientation angles were seen at the positions of the later stage of melt growth, or the positions where the second-phase particles are large in size and volume. An electron backscattering diffraction technique revealed that the orientation of the second-phase particles affects the orientation of the matrix phase, some of which forms the subgrain boundaries. Electric and magnetic measurements have been performed for several samples having different subgrain geometries and the results of I-V and resistivity measurements indicated that subgrains act as weak links, especially in a high magnetic field region.

本文言語English
ページ(範囲)S61-S65
ジャーナルSuperconductor Science and Technology
17
2
DOI
出版ステータスPublished - 2004 2

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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