Electrical Resistivity and Magnetic Susceptibility of Amorphous Cr–Ni–Pt–P Alloys

Amorphous alloys having the composition (CrxNi0.30−xPt0.70) 0.75P0.25, where 0.0 ≤ x ≤ 0.06, were synthesized by rapid quenching of the melt. The base alloy, x=0, is nonmagnetic and its negative temperature dependence of resistivity in the range 4.2 ≤ T ≤ 400 °K was earlier interpreted in terms of Ziman's theory of structural scattering of electrons. Chromium additions to this Ni–Pt–P alloy give rise to an additional temperature-dependent negative-resistivity contribution. This observation may be correlated with the presence of localized magnetic moment on Cr atoms, and consequent Curie-Weiss behavior of the 1/χ-vs-T plots.