抄録
The magnetization and magneto-optical Kerr spectra of ordered MnPt3 alloy films were investigated. The films were prepared by annealing Mn/Pt multilayers at a temperature of 800°C for 30 minutes. It was found that the MnPt3 alloy films exhibit very large magneto-optical Kerr rotation, which reaches a maximum value of -1.1 deg at 1.24 eV. It is suggested that the large Kerr rotation is due not to enhancement by plasma resonance but to strong interband transitions.
