Magnetization curling in an infinite cylinder with a uniaxial magnetocrystalline anisotropy

Abstract

The magnetization curling mode for an infinite cylinder with a uniaxial magnetocrystalline anisotropy is considered. The angular dependence of the nucleation field HN and the coercive force Hc are estimated as a function of the radius, the magnetocrystalline anisotropy, and the inclination of the axis to the applied field. It is assumed that only curling and rotation in unison occur, and that the discontinuous jump by the curling mode brings the magnetization to the lower energy state given by Stoner–Wohlfarth. With this assumption, the rotational hysteresis loss Wr and integral Rh are evaluated both for an aligned and for a random assembly of infinite cylinders.