The effect of Cu doping in Pt spacer layers on the magneto-optical properties of sputtered Pt/Co multilayers has been investigated.It was found that the polar Kerr rotationθk,ellipticityεk,refractive index n and abs...The effect of Cu doping in Pt spacer layers on the magneto-optical properties of sputtered Pt/Co multilayers has been investigated.It was found that the polar Kerr rotationθk,ellipticityεk,refractive index n and absorptive index k show an oscillation behavior as a function of the Cu content x,reflective index R keeps almost constant with the decreasing wavelengthλ,threeθk peaks appear at x=0.03,0.12,0.25,respectively.Values of conductivity tensorσ1xx,σ_(2xx),σ_(1xy),andσ_(2xy) in the PtCu layers have been derived from experimentalθ_(k),ε_(k),n,and k values at wavelength 770nm.The oscillation of the polar Kerr rotationθ_(k) may be resulted from spin polarized quantum size effects in the PtCu layers.展开更多
基金Supported by the Beijing Natural Science Foundation under Grant No.1962003.
文摘The effect of Cu doping in Pt spacer layers on the magneto-optical properties of sputtered Pt/Co multilayers has been investigated.It was found that the polar Kerr rotationθk,ellipticityεk,refractive index n and absorptive index k show an oscillation behavior as a function of the Cu content x,reflective index R keeps almost constant with the decreasing wavelengthλ,threeθk peaks appear at x=0.03,0.12,0.25,respectively.Values of conductivity tensorσ1xx,σ_(2xx),σ_(1xy),andσ_(2xy) in the PtCu layers have been derived from experimentalθ_(k),ε_(k),n,and k values at wavelength 770nm.The oscillation of the polar Kerr rotationθ_(k) may be resulted from spin polarized quantum size effects in the PtCu layers.