Fig. 7. Temperature (left) and frequency (right) dependences of the real (χ′, top) and imaginary (χ′′, bottom) parts of the ac susceptibility, between 1.8 and 15 K and between 10 and 10 000 Hz respectively, for 2 in a 0.45 T dc field. Solid lines are visual guides on the left part of the figure and are the best fits of the experimental data to the generalized Debye model.
