DOMAIN STRUCTURE OF A FERROMAGNETIC PLATE WITH SPIN REORIENTATION AND A PHASE DIAGRAM TAKING ACCOUNT OF INHOMOGENEOUS STATES.

The phase diagram of a uniaxial ferromagnetic plate is constructed taking account of the possibility of spin reorientation. The possibility of the existence of a phase with an inhomogeneous magnetization distribution, a domain phase, was taken into account. The properties of the domain phase are investigated on the basis of a complete system of micromagnetic equations. The phase transition from the homogeneous phase to the domain phase is investigated. A distribution of the magnetization in the domain phase is obtained near the transition line from the domain to the homogeneous phase.