Subgrain structures and superconductivity in RE-Ba-Cu-O bulk superconductors

K. Ogasawara, N. Sakai, A. Koblischka-Veneva, M. R. Koblischka, M. Murakami

研究成果: Conference article査読

6 被引用数 (Scopus)

抄録

We have studied the microstructures of subgrains in large single-domain RE-Ba-Cu-O (RE=Y, Nd, Sm) bulk superconductors through microscopic observation and microarea X-ray pole figure analyses. The misorientation angle of subgrains increases as the crystal growth proceeds, and thus more crystal defects such as dislocations are seen at the later stage of the growth. Electron backscatter diffraction technique was successfully utilized for characterizing the subgrain boundaries. Electric and magnetic measurements for several samples containing different subgrain geometries have been performed. 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)225-230
ページ数6
ジャーナルPhysica C: Superconductivity and its applications
386
DOI
出版ステータスPublished - 2003 4 15
外部発表はい
イベントICMC 2002 - Xi an, China
継続期間: 2002 6 162002 6 20

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • エネルギー工学および電力技術
  • 電子工学および電気工学

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