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Diffusion model for the crystal growth of Pr1+xBa2−xCu3O7–δ by the top seeded crystal pulling method

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Abstract

A solidification model for Pr1+xBa2−xCu3O7−δ ternary oxides by the top seeded crystal pulling (SRL–CP: Solute Rich Liquid–Crystal Pulling) method is presented in which the composition of the grown single crystals is estimated from the starting composition in the crucible. This model involves the diffusion flux balance of each element at the growth interface in the liquid considering equilibrium tie-lines in the PrOy–BaO–CuO ternary phase diagram which have been obtained experimentally. The self-diffusion coefficient for Pr and the interdiffusivities for Ba and Cu in the liquid are used in this model because this liquid is a dilute solution for Pr. The calculated results are in good agreement with the experimental ones.

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Authors and Affiliations

  1. SRL-ISTEC, 1-10-13 Shinonome, Koto-ku, Tokyo, 135, Japan

    Minoru Tagami & Yuh Shiohara

  2. Department of Metallurgy, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113, Japan

    Takateru Umeda

Authors
  1. Minoru Tagami
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  2. Takateru Umeda
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  3. Yuh Shiohara
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Tagami, M., Umeda, T. & Shiohara, Y. Diffusion model for the crystal growth of Pr1+xBa2−xCu3O7–δ by the top seeded crystal pulling method. Journal of Materials Research 12, 2880–2888 (1997). https://doi.org/10.1557/JMR.1997.0382

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  • DOI: https://doi.org/10.1557/JMR.1997.0382

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