Title :
Giant Magneto-Impedance Effect in Ni

Fe

Composite Multilayers
Author :
Song, Zicheng ; Yuan, Wangzhi ; Zhao, Zhenjie ; Ruan, Jianzhong ; Yang, Xielong ; Seet, H.L. ; Li, X.P.
Author_Institution :
Dept. of Phys., East China Normal Univ., Shanghai
Abstract :
The giant magneto-impedance (GMI) effect of (NiFe/SiO2) n/Cu/(SiO2/NiFe)n composite multilayers is investigated. The results show that the magnitude of the GMI effect changes with an increasing number of layers n of bilayers SiO2/NiFe. At n=3, the maximum MI ratios reached 17.08%. When n was further increased to four and five, the MI ratios decreased slightly. This is mainly attributed to changes in the samples´ magnetic characteristics, which is due to the influence of the magnetic moment direction of the NiFe layer and the inner stress
Keywords :
copper; ferromagnetic materials; giant magnetoresistance; iron alloys; magnetic moments; magnetic multilayers; nickel alloys; silicon compounds; (NiFe-SiO2)-Cu-(SiO2-NiFe); composite multilayers; giant magneto-impedance effect; magnetic characteristics; magnetic hysteresis loop; magnetic moment; x-ray diffraction; Composite materials; Iron; Magnetic films; Magnetic moments; Magnetic multilayers; Magnetic sensors; Soft magnetic materials; Sputtering; X-ray diffraction; X-ray scattering; Giant magneto-impedance (GMI); Ni; X-ray diffraction (XRD); magnetic hysteresis loop;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.879893