抄録
(Cr1-χVχ) Pt3 alloy films were obtained by annealing (Cr-V)/Pt multilayer films prepared by rf magnetron sputtering. The structure and magnetic and magnetooptical properties for the alloy films were investigated. The CrPt3 (χ=0) film exhibited an uniaxial anisotropy of Ku=2.4×106 erg/cc and a saturation magnetization of Ms=235 emu/cc. The saturation magnetization and the uniaxial anisotropy decreased with increasing V substitution χ. On the other hand, variations of the Kerr spectral shape with increasing substitution χ were observed. The θ K peak around 1eV of the CrPt3 film shifted lower energy side with increasing χ, and the (Cr0.37V0.63) Pt3 alloy film showed a plateau around 2 eV in the Kerr spectrum. TheΧ-ray magnetic circular dichroism taken in the V 2p-3d excitation region indicated that the V has a ferromagnetic moment and align parallel to the Cr moment.
