Magnetic structure inhomogeneites near the surface of uniaxial antiferromagnet: “Magnetic field–roughness” phase diagram

Abstract Magnetic structure inhomogeneites induced by an external magnetic field near a rough surface of a collinear uniaxial antiferromagnet were investigated in the supposition that the easy axis lies in the surface plane. The equilibrium spin distributions were obtained as a solution of the set of Landau–Lifshitz–Hilbert equations. Phase diagram of magnetic structure inhomogeneites in variables “magnetic field–roughness” was predicted.