Time decay of the saturated remanent magnetization in a metallic spin glass.

摘要: The time decay of the saturated remanent magnetization (${M}_{s}$) has been studied in amorphous metallic spin glass (${\mathrm{Fe}}_{0.15}$${\mathrm{Ni}}_{0.85}$${)}_{75}$P $_{16}\mathrm{B}_{6}$${\mathrm{Al}}_{3}$. This relaxation, which by nature is different from zero-field equilibrium shows at low temperatures (T/${T}_{g}$0.98) a variation accurately described pure power law. At immediate vicinity ${T}_{g}$, experimental can be law times stretched exponential functional form: ${M}_{s}$=${M}_{0}$${t}^{\mathrm{\ensuremath{-}}m}$ exp[-(t/${\ensuremath{\tau}}_{p}$${)}^{1\mathrm{\ensuremath{-}}n}$]. .AE