Frequency, DC-field and temperature dependence of the AC-susceptibility of Nd₆₀Fe₃₀Al₁₀ alloy

The temperature dependence of the initial AC-susceptibility of melt-spun Nd₆₀Fe₃₀Al₁₀ ribbons shows an anomaly, which depends strongly on the heat treatment and the superposing DC-field, The anomaly is suppressed by DC-field. Additionally, the position and the amplitude of the anomaly are frequency dependent. However, the time dependence of the AC-susceptibility is observable for temperatures above 100 K. The Analysis of the susceptibility (measured with and without superposing DC-field) as function of the time at different temperatures using the Arrhenius law was performed.