Chin. Phys. Lett.  2000, Vol. 17 Issue (11): 835-837    DOI:
Original Articles |
Giant Magneto-Impedance Effect in Sandwiched FeSiB/Cu/FeSiB Films
ZHOU Yong;YANG Chun-Sheng;YU Jin-Qiang;ZHAO Xiao-Lin;MAO Hai-Ping
Thin Films and Microfabrication Key Laboratory of State Education Ministry, Information Storage Research Center, Shanghai Jiao Tong University, Shanghai 200030
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ZHOU Yong, YANG Chun-Sheng, YU Jin-Qiang et al  2000 Chin. Phys. Lett. 17 835-837
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Abstract Giant magneto-impedance (GMI) effect has been realized in the sandwiched FeSiB/Cu/FeSiB films. With magnetic field Ha and ac current applied along the longitudinal direction of the sample, the GMI ratio increases with the increasing Ha, reaching a positive maximum value, and then decreases to negative values with further increase of magnetic field. Field dependence of the GMI ratio also indicates that the magnetic field corresponding to the maximum GMI ratio is different for various frequencies. The positive maximum GMI ratio is 17.2% for Ha=1600A/m and frequency of 3 MHz. In addition, the films display a large negative GMI ratio with a magnetic field applied along the transverse direction and the value of the GMI ratio is about -13.4% for Ha=5600A/m and frequency of 3 MHz.
Keywords: 75.70.-i      73.50.Jt      75.50.Kj     
Published: 01 November 2000
PACS:  75.70.-i (Magnetic properties of thin films, surfaces, and interfaces)  
  73.50.Jt (Galvanomagnetic and other magnetotransport effects)  
  75.50.Kj (Amorphous and quasicrystalline magnetic materials)  
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ZHOU Yong
YANG Chun-Sheng
YU Jin-Qiang
ZHAO Xiao-Lin
MAO Hai-Ping
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