Strong stray fields in magnets with a nonuniform distribution of the magnetization
Abstract
Stray fields produced by magnets in the form of a cylinder in which the vector of magnetization at each point is directed along the cylinder radius have been calculated. It was assumed that this distribution of magnetization was achieved due to the presence of a radial crystalline texture and the related magnetic anisotropy with a large field of the uniaxial anisotropy H K . It has been shown that the greatest stray fields are reached on the surface of the magnet at points that are located near its axis, and the limiting value of the point field is equal to 4πM S ln(a/r). It has been established that in magnets with a radial magnetization the region of localization of strong fields H > 4πM S substantially exceeds that characteristic of the systems of magnets with a uniform magnetization.