Figure 12
From: Structural and magnetic properties of cobalt iron disulfide (CoxFe1−xS2) nanocrystals
AC susceptibility measurements with x = 0.625. (a) The temperature dependence of the real part of the AC susceptibility (χ'(T)) for frequencies ranging from 10 to 10,000 Hz for Co x Fe1−xS2, where x = 0.625. (b) Inverse susceptibility versus temperature and its linear fit (pink line). Frequency dependence of \({T}_{{\rm{\max }}}^{AC}\) and its fit using the (c) Néel-Arrhenius model, (d) Vogel-Fulcher model and (e) the critical slowing down model.
