902812.fig.005a
(a)
902812.fig.005b
(b)
Figure 5: (a) Magnetic field dependence of magnetization at 1.8 K for . (b) Magnetic field dependence of magnetization at 1.8 K for . The magnetization data is scaled by a factor of 0.05 and superimposed with the 1.8 K data from Figure 3(a).