Synthesis and Characterization of Ni{sub 1−x}Cu{sub x}Bi{sub 3} Superconductor

Journal Article · Sun Apr 15 00:00:00 EDT 2018 · Journal of Superconductivity and Novel Magnetism

DOI:https://doi.org/10.1007/S10948-017-4304-1· OSTI ID:22776954

Siqueira, Franciele Nunes de; Pereira, Gislaine; Opata, Yuri Aparecido ^[1]; Siqueira, Ezequiel Costa ^[2]; Jurelo, Alcione Roberto ^[1]

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1. Universidade Estadual de Ponta Grossa, Departamento de Física (Brazil)
2. Universidade Tecnológica Federal do Paraná, Departamento de Física (Brazil)

In this paper, we characterized the microstructure and superconducting properties of Cu-doped NiBi{sub 3} samples. The polycrystalline Ni{sub 1−x}Cu{sub x}Bi{sub 3} (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 NiBi{sub 3} 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.

• OSTI ID: 22776954
• Journal Information: Journal of Superconductivity and Novel Magnetism, Vol. 31, Issue 4; Other Information: Copyright (c) 2018 Springer Science+Business Media, LLC, part of Springer Nature; Article Copyright (c) 2017 Springer Science+Business Media, LLC; http://www.springer-ny.com; Country of input: International Atomic Energy Agency (IAEA); ISSN 1557-1939
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMIC FORCE MICROSCOPY
CONCENTRATION RATIO
COPPER
CRYSTAL STRUCTURE
DOPED MATERIALS
MICROSTRUCTURE
NICKEL COMPOUNDS
POLYCRYSTALS
RAMAN SPECTROSCOPY
SCANNING ELECTRON MICROSCOPY
SUPERCONDUCTORS
SYNTHESIS
TRANSITION TEMPERATURE
X-RAY DIFFRACTION