Kinetics of precessing ball solitons in ferromagnet at the first-order transition

Details Kinetics of precessing ball solitons in ferromagnet at the first-order transition Kinetics of precessing ball solitons in ferromagnet at the first-order transition

2010-05-12

arxiv.org/abs/1005.2054v1

Physics

Condensed Matter

Other Condensed Matter

16 pages, 15 figures, for publication in journal

Scientific paper

The fundamentals of precessing ball solitons (PBS) arising as a result of the energy fluctuations at the first-order phase transition induced by a magnetic field in ferromagnets with uniaxial anisotropy are presented. When external magnetic field is anti-parallel to the magnetization direction of the crystal, PBS states are possible in a wide range of amplitudes and energies, including the positive and negative energy relative to an initial condition. PBS are born with the greatest probability at near-zero energy, i.e. near the bifurcation point. Evolution of the PBS, at which they transform into macroscopic domains of a new magnetic phase or into quasi-equilibrium solitonic state, is analyzed.

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