The influence of interfaces on the magneto-optical Kerr effect in the Co/Ni multilayer has been investigated.It was found that the magnetic-optical Kerr rotation varies with the numbers of interfaces(x)in Co/Ni multil...The influence of interfaces on the magneto-optical Kerr effect in the Co/Ni multilayer has been investigated.It was found that the magnetic-optical Kerr rotation varies with the numbers of interfaces(x)in Co/Ni multilayer,which indicated that the interface states play an important role in the Kerr effect.Moreover,ellipticity and optical constants n and k are also found to vary with x.Some possible mechanisms have been discussed.展开更多
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
The dependence of giant magnetoresistance of sputtered granular type(Co-Ag)/Ag multilayers on the thickness of Ag layers and magnetic layers with varying Co content in the magnetic layers was studied.The magnetoresist...The dependence of giant magnetoresistance of sputtered granular type(Co-Ag)/Ag multilayers on the thickness of Ag layers and magnetic layers with varying Co content in the magnetic layers was studied.The magnetoresistance ratioΔR/R was found to be enhanced by 2-7 times comparing with the single layer granular films.The enhancement was explained by the antiferromagnetic coupling due to magnetostatic interaction between the Co clusters in neighboring magnetic layers.展开更多
基金Supported by the Beijing Natural Science Foundationpartially by the National Natural Science Foundation of China under Grant Nos.59871063 and 59928101.
文摘The influence of interfaces on the magneto-optical Kerr effect in the Co/Ni multilayer has been investigated.It was found that the magnetic-optical Kerr rotation varies with the numbers of interfaces(x)in Co/Ni multilayer,which indicated that the interface states play an important role in the Kerr effect.Moreover,ellipticity and optical constants n and k are also found to vary with x.Some possible mechanisms have been discussed.
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.
基金Supported by the National Natural Science Foundation of China under Grant Nos.19754001 and 59392800,and Shanghai Research Center for Applied Physics.
文摘The dependence of giant magnetoresistance of sputtered granular type(Co-Ag)/Ag multilayers on the thickness of Ag layers and magnetic layers with varying Co content in the magnetic layers was studied.The magnetoresistance ratioΔR/R was found to be enhanced by 2-7 times comparing with the single layer granular films.The enhancement was explained by the antiferromagnetic coupling due to magnetostatic interaction between the Co clusters in neighboring magnetic layers.
