Effect of inhomogeneous radially directed mechanical stresses on the domain structure of a FeBO3 single crystal

Abstract

The effect of inhomogeneous radially directed mechanical stresses on the domain structure of a FeBO3 single crystal is studied by a magnetooptical method. It was found that in the magnetic field applied in the FeBO3 basal plane along the direction of the compressive force, a system of wedge-shaped domains appears in the process of magnetization in the crystal, which exists in a certain temperature-dependent interval of fields in the H0 range of Hс values. The discussion of the results obtained was carried out within the framework of the thermodynamic theory of the domain structure. It is shown that the theoretical model used well allows one to describe the experimentally observed relative change in d as a function of the magnetic field and temperature.