An experimental investigation of the surface magnetization of iron using the magneto‐optical Kerr effect

摘要

Using the magneto‐optical Kerr effect, it is shown that the surface magnetization and the bulk magnetization of both polycrystalline and single‐crystal iron plates behave quite differently. In particular, a distinctive ’’lag’’ is observed in the surface magnetization, except when the single crystal is magnetized along the easy 〈100〉 direction. The surface magnetization of the single crystal is highly anisotropic. Implantation of a dose of 1015 Fe+ ions/cm2 into a polycrystalline plate causes a change in the shape of the magnetization curve.