Temperature dependence of the electrical resistivity and absolute thermoelectric power of amorphous metallic glass Ni33.3Zr66.7

Electron transport properties and thermal stability of Ni33.3Zr66.7 metallic glass (MG) have been studied using an original device for simultaneous measurements of electrical resistivity and absolute thermoelectric power (ATP) controlled by a LabView software written by one of us. The electrical res...

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Bibliographic Details
Published in:Journal of non-crystalline solids 2018-02, Vol.481, p.352-360
Main Authors: Smili, B., Messaoud, A., Bouchelaghem, W., Abadlia, L., Fazel, N., Benmoussa, A., Kaban, I., Gasser, F., Gasser, J.G.
Format: Article
Language:English
Subjects:
Absolute thermoelectric power
Electrical resistivity
Electronic transport properties
Metallic glass
Phase transitions
Physics
Thermal stability
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Summary:Electron transport properties and thermal stability of Ni33.3Zr66.7 metallic glass (MG) have been studied using an original device for simultaneous measurements of electrical resistivity and absolute thermoelectric power (ATP) controlled by a LabView software written by one of us. The electrical resistivity and absolute thermoelectric power were measured simultaneously and very accurately over a temperature range from 25 to 400°C with a nominal heating rate of 0.5K min−1. The electronic thermal conductivity was also determined using the Wiedemann–Franz law in the same temperature range. Due to its high efficiency, this technique is more and more used because it is characterized by a high sensitivity to detection of the phase transitions related to electronic transport, which is the aim of this study. Analysis of the temperature dependence of the resistivity and ATP of the Ni33.3Zr66.7 glassy ribbons proves the potential of this characterization method to study the thermal behavior of metallic glasses. The crystal structure and the morphology of Ni33.3Zr66.7 metallic glass in the as-quenched state and after heat treatments were studied using X-ray diffraction (XRD), and scanning electron microscope (SEM). •Electronic transport properties of Ni33.3Zr66.7 glass were studied using a new high temperature measurement device with a very high degree of resolution and accuracy.•Electrical resistivity and ATP measurements of MGs can be qualitatively explained in the frame of Faber–Ziman formalism.•The Curie point in metallic glasses is characterized by the change of the temperature coefficient of resistivity (second order transition).•Electronic transport properties and their temperature coefficients give as or more accurate informations than DSC, they can be used as helpful criteria for predicting the GFA of MGs.•Quasi simultaneous measurements of electrical resistivity and thermopower make us able to examine two different physical properties on the same sample.
ISSN:0022-3093
1873-4812
DOI:10.1016/j.jnoncrysol.2017.11.012