7.4.2 Oxide Electric Field Component
To be able to discuss the effect of 
on the relaxation we again refer to
Fig. 7.5. When comparing the devices stressed for 
with 
and
, 
has approximately the same value, but the relative relaxation
with respect to its very different 
changes as depicted in Fig. 7.4
(bottom left). With a raise in the oxide electric field the recovery sets in late, but
proceeds faster. This effect is now explored by specifying the slopes of the first
(
) and second (
) logarithm, i.e. the short-term and long-term relaxation
behavior.