Influence of antiphase boundaries on critical current densities in YBa2Cu3O7-y single crystals

Junko Shibata, Akihiro Oka, Teruo Izumi, Yuh Shiohara, Tsukasa Hirayama, Yuichi Ikuhara

研究成果: ジャーナルへの寄稿学術誌査読

4 被引用数 (Scopus)

抄録

Twinned and detwinned YBa2Cu3O7-y (Y123) single crystals were observed by transmission electron microscopy to investigate the influences of the lattice defects on the peak effect for Y123 single crystals. Twin boundaries with the spacing of 0.2-0.5 μm were seen only in the twinned Y123 single crystals. Antiphase boundaries (APBs) along the (110)Y123 plane were observed in both twinned and 0.5 h-detwinned samples, which showed the peak effect in high magnetic field over 3 T at 70 K. In contrast, APBs were not found in 100 h-detwinned sample. Critical current densities of this sample were small all over the range of the applied magnetic field. In conclusion, we suggest that APBs have a significant influence on the peak effect of Y123 single crystals in the high magnetic field.

本文言語英語
ページ(範囲)1935-1941
ページ数7
ジャーナルJournal of Materials Research
16
7
DOI
出版ステータス出版済み - 7月 2001
外部発表はい

!!!All Science Journal Classification (ASJC) codes

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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