FeSi/Cu compositionally modulated amorphous films with different thicknesses of Cu layers have been obtained by radio-frequency sputtering.We studied the resistivity and magnetoresistance of these samples at room temp...FeSi/Cu compositionally modulated amorphous films with different thicknesses of Cu layers have been obtained by radio-frequency sputtering.We studied the resistivity and magnetoresistance of these samples at room temperature.The resistivity of FeSi/Cu compositionally modulated films(CMFs)increases with decreasing the thickness of Cu layers.The FeSi/Cu CMFs show a negative magnetoresistance effect.The magnetoresistance decreases with decreasing the Cu layer thickness dc when dc is over 20A,but it turns to increase with decreasing dc when dc is below 20A.This is probably caused by the polarization of conductive electrons of Cu.展开更多
Co-Nb/Pd multilayer films with different thicknesses of Co-Nb layers have been prepared by rf sputtering.X-ray diffraction showed that the Co-Nb layers for all samples were in amorphous state.Magnetic measurements sho...Co-Nb/Pd multilayer films with different thicknesses of Co-Nb layers have been prepared by rf sputtering.X-ray diffraction showed that the Co-Nb layers for all samples were in amorphous state.Magnetic measurements showed that the Pd atoms near the Go-Nb layers are polarized by Co atoms.The total thickness of polarization for each Pd layer is about 3.2Å.A perpendicular easy axis in Co-Nb/Pd films can be obtained when the Co-Nb layers are very thin.展开更多
基金Supported by the National Natural Science Foundation of China.
文摘FeSi/Cu compositionally modulated amorphous films with different thicknesses of Cu layers have been obtained by radio-frequency sputtering.We studied the resistivity and magnetoresistance of these samples at room temperature.The resistivity of FeSi/Cu compositionally modulated films(CMFs)increases with decreasing the thickness of Cu layers.The FeSi/Cu CMFs show a negative magnetoresistance effect.The magnetoresistance decreases with decreasing the Cu layer thickness dc when dc is over 20A,but it turns to increase with decreasing dc when dc is below 20A.This is probably caused by the polarization of conductive electrons of Cu.
基金the National Natural Science Foundation of ChinaDoctoral Training Foundation of National Education CommissionState Key Laboratory of Magnetism,Institute of Physics,Chinese Academy of Sciences.
文摘Co-Nb/Pd multilayer films with different thicknesses of Co-Nb layers have been prepared by rf sputtering.X-ray diffraction showed that the Co-Nb layers for all samples were in amorphous state.Magnetic measurements showed that the Pd atoms near the Go-Nb layers are polarized by Co atoms.The total thickness of polarization for each Pd layer is about 3.2Å.A perpendicular easy axis in Co-Nb/Pd films can be obtained when the Co-Nb layers are very thin.
