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Study of Fe Addition on the Thermal Decomposition of Coprecipitated Oxalates for the Bi-based Superconductor Synthesis

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Abstract

This work introduces results obtained during the preparation of a Bi-based material with superconducting properties by oxalate coprecipitation.

The influence of Fe presence on the precursors thermal stability and on the superconducting phases formation mechanism are presented. The thermal decomposition and the stability in air of FeC2O4×2H2O and also of the components mixture were studied by DTA/TG. It was evidenced that iron oxalate decomposes at the lowest temperature compared to the decomposition temperatures of the individual oxalates.

XRD, IR and TEM/ED studies were approached to investigate the individual oxalates and the mixture coprecipitates for the high-T c superconducting material synthesis.

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Authors and Affiliations

  1. Materials and Structures Laboratory, Tokyo Institute of Technology, Nagatsuta 4259, Midori-ku Yokohama, 226-8503, Japan

    M. Popa & J. M. Calderon-Moreno

  2. Institute of Physical Chemistry, Bucharest, 77208, 202 Splaiul Independentei, Romania

    D. Crisan & M. Zaharescu

Authors
  1. M. Popa
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  2. J. M. Calderon-Moreno
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  3. D. Crisan
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  4. M. Zaharescu
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Popa, M., Calderon-Moreno, J.M., Crisan, D. et al. Study of Fe Addition on the Thermal Decomposition of Coprecipitated Oxalates for the Bi-based Superconductor Synthesis. Journal of Thermal Analysis and Calorimetry 62, 633–645 (2000). https://doi.org/10.1023/A:1012009022027

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