Determining the Saddle Point in Micromagnetic Models of Magnetization   Switching
  A numerical model of single-domain nanoscale iron magnets fabricated using scanning-microscope-assisted chemical vapor deposition is simulated using finite-temperature micromagnetics. A Projective-dynamics method is used to determine the magnetization at the saddle point as a function of temperature. This magnetization is found to decrease linearly as the temperature is raised. 
Gregory Brown, M. A. Novotny, and Per Arne Rikvold