Fig. 2: Bulk magnetization.
From: Observation of antiferromagnetic order in a quasicrystal
a, Magnetic susceptibility (M/H) of the Au56In28.5Eu15.5 iQC as a function of temperature below 20 K under ZFC and FC conditions. The inset shows specific heat Cp of the same compound as a function of temperature together with its temperature derivative dCp/dT. b, Field-dependent magnetization of the Au56In28.5Eu15.5 iQC at T = 0.4 K, 1.8 K, 3 K, 4 K, 5 K, 6 K and 10 K up to 7 T. The inset shows the first derivative of the magnetization curves versus the magnetic field at various temperatures up to 1 T. The second derivative of dM/dH shows the position of metamagnetic anomalies taking place under 0.80 T, 0.67 T, 0.57 T and 0.42 T at 0.4 K, 1.8 K, 3 K and 4 K, respectively, which is a characteristic feature of antiferromagnetic transitions.
