Influence of antiphase boundaries on critical current densities in Yba2Cu3O7−ysingle crystals

Journal of Materials Research volume 16, pages1935–1941(2001)Cite this article

Abstract

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 0.5h-detwinned samples, which showed the peak effect in high magnetic field over 3 T at 70 K. In contrast, APBs were not found in 100h-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.

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Author notes

  1. Junko Shibata

    Present address: Engineering Research Institute, School of Engineering, The University of Tokyo, 2-11-16 Yayoi, 113-8656, Bunkyo-ku, Tokyo, Japan

  2. Akihiro Oka

    Present address: Ishikawajima Harima Heavy Industries, 3-1-15 Toyosu, 135-8732, Koto-ku, Tokyo, Japan

Affiliations

  1. Japan Fine Ceramics Center, 2-4-1 Mutsuno, 456-8587, Atsuta-ku, Nagoya, Japan

    Junko Shibata & Tsukasa Hirayama

  2. Superconductivity Research Laboratory, 1-10-13 Shinonome, 135-0062, Koto-ku, Japan

    Akihiro Oka, Teruo Izumi & Yuh Shiohara

  3. Engineering Research Institute, School of Engineering, The University of Tokyo, 2-11-16 Yayoi, 113-8656, Bunkyo-ku, Tokyo, Japan

    Yuichi Ikuhara

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  1. Junko Shibata
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  2. Akihiro Oka
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  3. Teruo Izumi
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  4. Yuh Shiohara
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  5. Tsukasa Hirayama
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  6. Yuichi Ikuhara
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Correspondence to Junko Shibata.

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Shibata, J., Oka, A., Izumi, T. et al. Influence of antiphase boundaries on critical current densities in Yba2Cu3O7−ysingle crystals. Journal of Materials Research 16, 1935–1941 (2001). https://doi.org/10.1557/JMR.2001.0265

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