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Mattias, B. T., Geballe, T. H., and Compton, V. B., “superconductivity ” Rev. Mod. Phys. 35 1-22. 1963.

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Article

Superconductivity in Amorphous and Fully Crystallized Ni-Fe-Zr Metallic Glasses

1Department of physics, Faculty of Science, United Arab Emirates University, Al-Ain, UAE


American Journal of Materials Science and Engineering. 2013, Vol. 1 No. 2, 24-28
DOI: 10.12691/ajmse-1-2-2
Copyright © 2013 Science and Education Publishing

Cite this paper:
F. Hamed. Superconductivity in Amorphous and Fully Crystallized Ni-Fe-Zr Metallic Glasses. American Journal of Materials Science and Engineering. 2013; 1(2):24-28. doi: 10.12691/ajmse-1-2-2.

Correspondence to: F. Hamed, Department of physics, Faculty of Science, United Arab Emirates University, Al-Ain, UAE. Email: FHamed@uaeu.ac.ae

Abstract

Nano crystallization of Ni0.5Fe0.5Zr3 metallic glasses was achieved by isothermal annealing over the temperature range 673-1173K. The crystallization precedes with the formation of metastable fcc (FeZr2+NiZr2) + stable bct (FeZr2+NiZr2) to stable bct (FeZr2+NiZr2). The resistivity (ρ) of the amorphous and fully crystallized states of Ni0.5Fe0.5Zr3 metallic glasses was investigated over the temperature range 2-300k. The temperature dependence of the resistivity (ρ(T)) for the amorphous state is well described by the Mizutani's equation as group 4 metallic glasses with the Fermi level in the d band; while ρ(T) for the fully crystallized states show a negative deviation from linearity. The amorphous and crystalline states have displayed superconductive transitions at low temperatures. Enhancement in the superconducting transition temperature (Tc) in comparison to the amorphous state was observed in the fully crystallized states.

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