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Synthesis and Characterization of Ni1−x Cu x Bi3 Superconductor

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Abstract

In this paper, we characterized the microstructure and superconducting properties of Cu-doped NiBi3 samples. The polycrystalline Ni1−x Cu x Bi3 (0 ≤ x ≤ 0.10) samples were prepared using a solid-state reaction method. The crystal structure and unit cell parameters were determined by Rietveld refinement of powder X-ray diffraction. The data showed that the main phase present corresponded to NiBi3 without dependence on the Cu concentration, but with small quantities of Ni and Bi. The SEM and AFM measurements revealed that the main phase was inhomogeneous at microscopic level, with Bi richer regions in comparison to other regions. However, Raman spectroscopy results did not show significant changes in the spectra with Cu doping and in different regions of the samples. Another finding was that regardless of Cu doping, the superconducting transition temperature was 4.05–4.06 K.

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Acknowledgements

The authors are grateful to the C-LABMU/ UEPG for the characterization facilities. This work was partially financed by CNPq under contract no. 472.746/2013-8.

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Authors and Affiliations

  1. Departamento de Física, Universidade Estadual de Ponta Grossa, Av. Gen. Carlos Cavalcanti 4748, Ponta Grossa, Paraná, 84.030-000, Brazil

    Adriane Consuelo da Silva Leal, Franciele Nunes de Siqueira, Gislaine Pereira, Yuri Aparecido Opata, João Frederico Haas Leandro Monteiro & Alcione Roberto Jurelo

  2. Departamento de Física, Universidade Tecnológica Federal do Paraná, Campus Ponta Grossa, Avenida Monteiro Lobato 1787, Ponta Grossa, Paraná, 84.016-210, Brazil

    Ezequiel Costa Siqueira

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  1. Adriane Consuelo da Silva Leal
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  2. Franciele Nunes de Siqueira
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  3. Gislaine Pereira
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  4. Yuri Aparecido Opata
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  5. Ezequiel Costa Siqueira
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  6. João Frederico Haas Leandro Monteiro
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  7. Alcione Roberto Jurelo
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Correspondence to João Frederico Haas Leandro Monteiro.

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Leal, A.C.d., de Siqueira, F.N., Pereira, G. et al. Synthesis and Characterization of Ni1−x Cu x Bi3 Superconductor. J Supercond Nov Magn 31, 1047–1052 (2018). https://doi.org/10.1007/s10948-017-4304-1

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  • DOI: https://doi.org/10.1007/s10948-017-4304-1

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