Extraordinary Hall Effect in Paramagnetic Gold Alloys

Abstract

The Hall coefficient of alloys of up to 5% Ni, Co, Fe, and Mn in Au has been measured from 4.2°K to room temperature. The Hall coefficients are strongly temperature dependent in these alloys and have been fitted to an equation of the form R=R₀+R_1χ, where R₀ is close to the value for the Hall coefficient of pure Au, and χ the magnetic susceptibility, is the source of most of the temperature dependence. Values for R₁ are compared to the extraordinary coefficients of ferromagnetic metals.