J Magn Magn Mater 272-76 (2004) 747-749
Two complementary methods to study thermal effects in
micromagnetics are compared. On short time scales Langevin
dynamics gives insight in the thermally activated dynamics. For
longer time scales the "nudged elastic band" method is applied.
The method calculates a highly probable thermal switching path
between two local energy minima of a micromagnetic system.
Comparing the predicted thermal transition rates between ground
states in small softmagnetic elements up to a size of 90 x 90 x
4.5 nm(3) gives good agreement of the methods.