Biomedical Engineering Reference
In-Depth Information
1.2
0.9
0.6
0.3
0.0
-3
-2
-1
0
1
2
ln (
/
m
)
Figure 14.11
Scaling behavior of tanδ at various temperatures for present material.
303K
323K
343K
63K
393K
403K
423K
443K
0.0012
0.0009
0.0006
0.0003
0.0000
3
4
5
6
7
8
ln
Figure 14.12
Frequency dependence of M at various temperatures for present material.
h e scaling behavior of tanδ (ω,T) clearly indicates that the loss
spectra are nearly temperature independent [14, 15]. h e frequency
dependence of the electric modulus at various temperatures is shown in
Figure 14.12. Figure 14.13 shows the Arrhenius plot of M with activa-
tion energy of 0.13 eV.
In Figure 14.14 electric modulus spectra have been shown in a scaled
coordinate in the temperature range from room temperature to 403 K.
h e superposition of all curves in a single master curve indicates that the
