Figure 2
From: Positive to negative zero-field cooled exchange bias in La0.5Sr0.5Mn0.8Co0.2O3 ceramics
(a) Temperature dependence of magnetization M(T) measured at 50 Oe after FC and ZFC procedures. The inset shows the enlarge scale of ZFC curve. (b) Temperature dependence of the real part χ′(T) of ac susceptibility measured at different frequencies with an ac magnetic field of 5 Oe. The inset shows the fit using the power law.
