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Precessing Ball Solitons as Self-Organizing Systems during a Phase Transition in a Ferromagnet
Joint Institute for Nuclear Research, Dubna, Russia
- 1 Joint Institute for Nuclear Research, Dubna, Russia
Applied Mathematics·Volume 04 (2013)·Pages 78–83·Published 10 October 2013·DOI10.4236/am.2013.410A3010
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Abstract
Precessing ball solitons (PBS) in a ferromagnet during the first order phase transition is induced by a magnetic field directed along the axis of anisotropy, while the action of the periodic field perpendicular to the main magnetic field has been analyzed. Under these conditions, the characteristics of arising equilibrium PBS are uniquely determined by the frequency of the periodic field, but the solitons with other frequencies are impossible. For such structure, the entropy increase connected with dissipation is compensated by the decrease of the entropy due to the external periodic field. It is shown that the equilibrium PBS are essentially the “self-organizing systems” that can arise spotaneously in a metastable state of ferromagnet.
KeywordsFerromagnetMagnetic FieldPeriodic Magnetic FieldFirst-Order Phase TransitionPrecessing Ball SolitonDissipative Magnetic StructuresSelf-Organizing Systems
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