Effect of pressure on electrical resistance of transition-metal-based alloys

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Abstract
Measurements have been made of the effect of hydrostatic pressure to 8 kbar, at room temperature, on the electrical resistance of five transition-metal-based amorphous alloys and their crystalline counterparts. The resistivity dependence of the pressure coefficient of resistance of these alloys, and results from other alloys taken from the recent literature, exhibit a trend analogous to the Mooij correlation. The pressure coefficient of resistance for crystalline and disordered systems and these data are discussed in terms of the diffraction model of electrical transport. It is suggested that the observed correlation of the pressure coefficient of resistance with resistivity is a manifestation of the breakdown of standard theory for high-resistivity metals, i.e., another example of Mooij phenomena.