Fig. 3 | Communications Physics

Fig. 3

From: Topologically stable helices in exchange coupled rare-earth/rare-earth multilayer with superspin-glass like ordering

Fig. 3

AC susceptibility measurements. a The temperature dependence of the real part of the AC susceptibility (χ′(T)) for frequencies ranging from 10 to 10,000 Hz for the [Dy10/Tb10]10 sample. Frequency dependence of the χ′(T) peak \(T_{{\mathrm{max}}}^{AC}\) and its fit using b the Néel-Arrhenius model, c the Vogel-Fulcher model and d the critical slowing down model. Error bars, typically of the symbol sizes, represent standard error of the estimated \(T_{{\mathrm{max}}}^{AC}\) values in (b), (c) and (d)

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