| Summary: | 碩士 === 國立彰化師範大學 === 光電科技研究所 === 96 === The objective of my thesis is mainly to investigate influence of capping layer on magneto-optical Kerr effect in magnetic sheet-film systems. To prevent the unwanted oxidation of the magnetic layer, we overlay the capping layer on the optically magnetic layer. With a capping layer, the magnetic character of the magnetic layer didn’t change and the capping layer increase intensity of the kerr rotation. We change three materials of capping layer. The three materials are SiNX, MgO, and Ta. With change the material of the capping layer, we also change the depth of every capping layer. Otherwise, we change the different incident angle. When the incident angle is sixty, the intensity of the kerr rotation present the best result. We first discuss the the capping later of SiNX and MgO which both are insulated material. With the depth of capping layer from 0nm to 60 nm, the capping layer increase the intensity of kerr rotation by the thin-film system. With the depth of capping layer from 60nm to 100 nm, the capping layer decrease the intensity of kerr rotation by the thin-film system by the bulk material system. Secondly, the capping layerof Ta is metal material, the capping layer decrease the intensity of kerr rotation by the thin-film system by the skin effect.
|
|---|
