Muon Spin Relaxation of an Al–3.4%Zn–1.9%Mg alloy

Abstract

Zero-field muon spin relaxation measurements were carried out on an Al-3.4% Zn-1.9% Mg alloy in the temperature range from 10 to 300 K. A sample heat treatment clearly made an effect on the relaxation rates of Al-3.4% Zn-1.9% Mg alloys; the dipole width and trapping rate of the heat-treated sample were smaller than those of the non-treated sample below 140 K. The temperature dependence of the trapping and detrapping rates was used to estimate activation energies of muons in Al-3.4% Zn-1.9% Mg.