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Preparation and Superconducting Properties of Melt-Textured NdBa2Cu3Oy Bulk with Sm2BaCuO5 Addition

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Advances in Superconductivity VIII

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Abstract

The NdBa2Cu3Oy (Nd123) bulk superconductor, to which Sm2BaCuO5 (Sm211) particles were intentionally added, was prepared through the so-called MMTG process in Ar (99% purity) flowing atmosphere at an ambient pressure. The quasi-single-crystal thus grown was about 1cm3 in dimension. Its polished surface was observed with an optical microscope. The superconducting transition temperature T C (onset) for the sample subjected to post annealing in oxygen atmosphere was 95K, which was higher than that of the Nd123 bulk with Nd4Ba2Cu2O10 (Nd422) addition. This improvement in T C was attributed to the suppression of the partial substitution of the trivalent rare-earth ion for the divalent Ba ion in the Ba site, since the Sm ion possessing a smaller atomic radius than that of the Nd ion, is most likely soluble in the Nd site of the Nd123-phase matrix. The microstructure was found to be composed of (Nd1-xSmx)4Ba2Cu2O10 (NdSm422) particles embedded homogeneously in the Nd1-xSmxBa2Cu3Oy (NdSm123) phase matrix in spite of the Sm211 addition.

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Authors and Affiliations

  1. Dept. of Crystalline Materials Science, Nagoya Univ., Nagoya, 464-01, Japan

    A. Takagi, T. Yamazaki, S. Ikeda & U. Mizutani

  2. IMRA Material R&D Co., Ltd., Kariya 448, Japan

    Y. Yanagi, Y. Itoh, M. Yoshikawa & T. Oka

  3. CIRSE, Nagoya Univ., Nagoya, 464-01, Japan

    Y. Yamada

Authors
  1. A. Takagi
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  2. T. Yamazaki
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  3. S. Ikeda
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  4. Y. Yanagi
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  5. Y. Itoh
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  6. M. Yoshikawa
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  7. T. Oka
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  8. Y. Yamada
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  9. U. Mizutani
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Editor information

Editors and Affiliations

  1. Department of Electronics, Faculty of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya, 464-01, Japan

    Hisao Hayakawa

  2. Superconductivity Research Laboratory, ISTEC, Koto-ku, Tokyo, 135, Japan

    Youichi Enomoto

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© 1996 Springer Japan

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Takagi, A. et al. (1996). Preparation and Superconducting Properties of Melt-Textured NdBa2Cu3Oy Bulk with Sm2BaCuO5 Addition. In: Hayakawa, H., Enomoto, Y. (eds) Advances in Superconductivity VIII. Springer, Tokyo. https://doi.org/10.1007/978-4-431-66871-8_156

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  • DOI: https://doi.org/10.1007/978-4-431-66871-8_156

  • Publisher Name: Springer, Tokyo

  • Print ISBN: 978-4-431-66873-2

  • Online ISBN: 978-4-431-66871-8

  • eBook Packages: Springer Book Archive

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