Figure 6

Hysteresis loops of T-900 and T-1000 observed in a range of −5 kOe < H < 5 kOe at 298 K (a) and frequency dependence of magnetic loss (tan δM) of corresponding paraffin composites (b), the upper left inset in (a) shows the hysteresis loops of the two samples between −500 and 500 Oe.