Abstract

In this work we demonstrate the existence of a clear correlation between the type of anomaly present in both ac susceptibility and magnetic after-effect (MAE) measurements performed on the R2Fe14BHx compounds. These anomalies are explained as caused by disaccommodation of the domain walls coupled to interstitial hydrogen atoms. These atoms provoke orientational after-effect because of the thermal activation of their motion. The anomalies detected in the MAE measurements represent the first experimental detection of diffusion magnetic after-effect in R2Fe14B compounds.

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