Comments to "Perfect and imperfect particles" by A. Aharoni

For original paper see ibid., vol.22, p.478-83 (Sept. 1986). The present author comments on criticisms made by A. Aharoni of some aspects of the present author´s. It is not doubted that Aharoni´s work gives exact results for the nucleation field (but the coercivity is of prime interest) for some ´perfect´ geometries. Real particles depart very markedly from these idealized forms having, e.g. blunt ends, pores, irregular shape, and an easy axis for the magnetocrystalline anisotropy which is not coincident with the axis of the particle and these solutions may not then apply. In this situation it appears to the present author that it is legitimate to look for approximate solutions better suited to more realistic models.<>