752973.fig.004a
(a)
752973.fig.004b
(b)
Figure 4: Calculated efficiency of heat dissipation by CoFe2O4 nanoparticles that are (a) nonrotatable and (b) rotatable. Dashed lines represent the Néel relaxation time and the solid line indicates , which was calculated using (11). Diamonds denote the conditions used in the experiment.