Nuclear Magnetic Resonance of Cu in Cu-Pd Alloy

Abstract

Knight shift and some other properties of Cu nuclear magnetic resonance in Cu-Pd alloys were measured. It was observed that the shift is negative, and its magnitude is almost proportional to the susceptibility, having the value of −0.9% at 1 atomic percent of Cu. A deviation from the proportionality was observed in Cu dilute region and it is suggested that the charge screening radius is of short range. The transverse relaxation time increases with the concentration of Pd, and the resonance line width takes a maximum value at 25% Pd. The longitudinal relaxation time keeps a constant value, about 1/3 of that of pure Cu metal, through all the concentration measured.