Ferromagnetism In Reentrant Pdfexmny

Muon spin relaxation in zero applied field has been used to study the ferromagnetism of the reentrant ternary alloy Pd${\mathrm{Fe}}_{0.0035}$${\mathrm{Mn}}_{0.05}$. The static linewidth below ${T}_{C}$ shows that Mn participates in the ferromagnetic ordering at ${T}_{C}$. The temperature dependence of the dynamic depolarization demonstrates that relatively slow fluctuations (${\ensuremath{\tau}}_{\mathrm{eff}\mathrm{\ensuremath{\approxeq}}{10}^{\mathrm{\ensuremath{-}}10}--{10}^{\mathrm{\ensuremath{-}}11}}$s) persist in the region between ${T}_{C}$ and the spin-glass temperature ${T}_{g}$. The transition at ${T}_{C}$ is marked by critical fluctuations of the Mn spins, but the glass transition at ${T}_{g}$ is not. A detailed analysis of the form of the dynamic depolarization function indicates that the muon does not occupy the interstitial sites nearest the Mn impurities.