Non-linear periodic waves and solitons in an antiferromagnet with uni-axial anisotropy during a spin-flop transition

摘要

An effective equation describing non-linear excitations in a magnetic subsystem of uni-axial antiferromagnets during spin-flop transition induced by an external magnetic field is obtained. The following solutions of this equation are analyzed: periodic modulated waves and dynamic plane and spherical solitons. The probability of their formation increases anomalously in the region of the lability point. Experimental possibilities for the detection and study of magnetic spherical solitons using neutron diffraction are considered.