Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 272, Issue -, Pages 747-749Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2003.11.274
Keywords
micromagnetic simulations; thermal switching; transition rates; energy barriers; Langevin dynamics; saddle points
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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 (C) 2003 Elsevier B.V. All rights reserved.
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