Frequency and field dependence of the ac susceptibility of the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Au</mml:mi><mml:mi mathvariant="normal">Mn</mml:mi></mml:math>spin-glass

Abstract

We have measured the ac susceptibility for $\mathrm{Au}\mathrm{Mn}$ containing 2.98 at.% Mn. Below the spin-glass freezing temperature ${T}_{f}$ a small frequency dependence of $\ensuremath{\chi}$ is found. The application of an external magnetic field near ${T}_{f}$ shows a distinct reduction of ${\ensuremath{\chi}}^{\ensuremath{'}}$. A comparison of the susceptibility behavior with that of other metallic spin-glass alloys containing manganese is made.