Abstract
The amorphous Co80−xErxB20 alloys with x = 0, 3.9, 5.5 and 8.6% have been prepared by melt spinning in pure argon atmosphere. The electrical resistivity has been measured over the temperature range from 4.2 to 300 K. All investigated amorphous alloys exhibit a logarithmic resistivity versus temperature below the temperature of the resistivity minimum Tmin. In addition, the resistivity shows a quadratic temperature behavior in the temperature range Tmin < T < 77 K. At high temperature, the electrical resistivity was discussed by the extended Ziman theory. For the studied alloys, the composition dependence of the temperature coefficient of electrical resistivity α shows a change in sign related to a structural short-range that is occurring in the composition range 8–9%.
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Khatami, M., Omari, L.H., Eazizayene, N. et al. Temperature Dependence of the Electrical Resistivity of Amorphous Co80−xErxB20 Alloys: Localization and Electron–Electron Interaction Effects. J Low Temp Phys 195, 211–220 (2019). https://doi.org/10.1007/s10909-019-02156-z
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DOI: https://doi.org/10.1007/s10909-019-02156-z