Journal of East China Normal University(Natural Sc ›› 2007, Vol. 2007 ›› Issue (1): 127-134.

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Study on Giant MagnetoImpedance Effect in Ni80Fe20Composite Multilayers (Chinese)

SONG Zi-cheng， YUAN Wang-zhi， ZHAO Zhen-jie，RUAN Jian-zhong， YANG Xie-long
  

  1. Department of Physics, East China Normal University, Shanghai 200062, China
  • Received:2005-11-07 Revised:2006-03-14 Online:2007-01-25 Published:2007-01-25
  • Contact: YUAN Wang-zhi

Abstract: The(Ni80Fe20/SiO2)n/Cu/(SiO2/Ni80Fe20)n composite multilayers were deposited onto glass substrates using RF magnetron sputtering equipment. The giant magneto impedance (GMI) effect was been investigated. The results show that the GMI effect enhanced, when the (Ni80Fe20/SiO2) bilayers structure repeated in the sample. At n=3, the maximum LMI ratio is 10.81%，while the maximum TMI ratios is 17.08%. And when n increases to 4 and 5, the MI ratios decrease slightly compared with the ratios at n=3. By the Xray diffraction spectrums and the hysteresis loops, the change of the
samples′ crystallization structure, magnetism characteristic and GMI effect
were studied, which were induced by the number of bilayers.

Key words: magnetic hysteresis loop, GMI effect, Ni80Fe20 multilayers , X ray diffraction, magnetic hysteresis loop, GMI effect, Ni80Fe20 multilayers

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