861690.fig.004a
(a)
861690.fig.004b
(b)
861690.fig.004c
(c)
Figure 4: (a) Variation of the Seebeck coefficient with temperature for series 1. (b) Variation of the Seebeck coefficient with temperature for series 2. (c) Variation of Seebeck coefficient at room temperature for the two series of ferrites.