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Short Range Order Strucrures in Y-Pr-Ba-Cu-O System Studied by X-Ray Absorption Fine Structure (XAFS) Techniques

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Abstract

Local structure around the constituent atoms in the compound system Y1-xPrxBa2CU3O7-y has been investigated by means of x-ray absorption fine structure (XAFS) techniques. By comparing the local structure in the compound x=1 with its counterpart x=0, the XAFS results provide a direct evidence that Pr has replaced Y in the material. The nearest-neighbor structure in the CuO2 planes seems to remain intact as x varies from 0 to 1, indicating that substitution of Pr for Y does not disturb the local distribution of holes in the CuO2 planes. We suggest that local disorder and distortions in the second-neighbor bonding configuration could be responsible for suppression of superconductivity with increasing Pr content in the system.

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Authors and Affiliations

  1. Physics Department, State University of New York at Buffalo, Buffalo, NY, 14260, USA

    Y. H. Kao, A. Krol, Z. H. Ming, C. S. Lin, Y. L. Soo & C. X. Gu

  2. IBM T.J. Watson Research Center, Yorktown Heights, NY, 10598, USA

    I. S. Yang & C. C. Tsuei

Authors
  1. Y. H. Kao
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  2. A. Krol
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  3. Z. H. Ming
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  4. C. S. Lin
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  5. Y. L. Soo
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  6. C. X. Gu
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  7. I. S. Yang
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  8. C. C. Tsuei
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Kao, Y.H., Krol, A., Ming, Z.H. et al. Short Range Order Strucrures in Y-Pr-Ba-Cu-O System Studied by X-Ray Absorption Fine Structure (XAFS) Techniques. MRS Online Proceedings Library 209, 759–764 (1990). https://doi.org/10.1557/PROC-209-759

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  • DOI: https://doi.org/10.1557/PROC-209-759

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