861690.fig.003a
(a)
861690.fig.003b
(b)
861690.fig.003c
(c)
861690.fig.003d
(d)
Figure 3: (a) Variation of log ( ) with for series 1. (b) Variation of log ( ) with for series 2. (c) Variation of log with composition at room temperature. (d) Plots of with log ω 2 one sample from each series.