Figure 6
From: Slow Spin Dynamics in Superconducting Ca0.9Ce0.1Fe2As2
M-H loops of Ca0.9Ce0.1Fe2As2 single crystal at different temperatures (T) = 5 K, 15 K and 30 K. Lower inset shows the coercivity region. Upper inset shows the demonstration of two possible origins of frustration of Ce spins responsible for slow spin dynamics; (i) random magnetic exchange interactions between the inhomogeneously distributed Ce spins ordered along the c-axis direction OR (ii) magnetic exchange coupling between Fe and Ce spins which leads to frustration among the Ce spins.
