Journal of East China Normal University(Natural Sc ›› 2005, Vol. 2005 ›› Issue (1): 68-72,1.

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GMI Effect Study of Amorphous FeCuNbSiB Multilayered Films(English)

Oumarou M,LI Xiao-dong,YUAN Wang-zhi,RUAN Jian-zhong,ZHAO Zhen-jie,YANG Xie-long   

  1. Department of Physics, East China Normal University, Shanghai200062, China
  • Received:2003-09-04 Revised:2003-10-25 Online:2005-03-25 Published:2005-03-25
  • Contact: YUAN Wang-zhi

Abstract: Giant magneto-impedance (GMI) has been observed in amorphous FeCuNbSiB/Cu/FeCuNbSiB sandwiched films annealed at 250℃.The conductive layer is about 2μm while the outer magnetic layers are about 1μm thick each. The GMI ratio of 20% has been obtained. In the goal to improve this ratio, two insulator layers have been used between the different layers followed by an annealing process at 250℃.A GMI ratio of 62% has been obtained. The displacement of GMI peaks with increasing of driving current frequency appears also. The amorphous state of the films was confirmed by an X-ray diffraction and Mössbauer spectrum.

Key words: multilayered films, magnetron sputtering, FeCuNbSiB, insulator layer, GMI effect, multilayered films, magnetron sputtering, FeCuNbSiB, insulator layer

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