抄録
Magneto-optical effects of TbFeCo/NdCo and TbFeCo/Pt multilayer films and NdTbFeCo alloy films prepared by sputter deposition are discussed in conjunction with the multilayer structure and the composition. The contribution to the polar Kerr spectra due to NdCo and Pt layers is significantly found at ultra- violet photon energies for both cases. In TbFeCo/NdCo multilayers, it is found that the enhancements of Kerr rotation θK and ellipticity ηK increase with NdCo layer thickness and become saturated at tNdCo = 15 Å for the case of tTbFeCo = 30 Å. In TbFeCo/Pt multilayer, the θK and ηK are also enhanced with Pt layer thickness and become saturated at tpt= 12 Å.
