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Transverse giant magneto-impedance effect in FeCuCrVSiB single layered and multilayered films

Wang Wen-Jing Yuan Hui-Min Jiang Shan Yan Shi-Shen Xiao Shu-Qin

Transverse giant magneto-impedance effect in FeCuCrVSiB single layered and multilayered films

Wang Wen-Jing, Yuan Hui-Min, Jiang Shan, Yan Shi-Shen, Xiao Shu-Qin
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Publishing process
  • Received Date:  27 February 2006
  • Accepted Date:  10 April 2006
  • Published Online:  20 November 2006

Transverse giant magneto-impedance effect in FeCuCrVSiB single layered and multilayered films

  • 1. (1)山东大学物理与微电子学院,济南 250100; (2)山东大学物理与微电子学院,济南 250100;山东大学晶体材料国家重点实验室,济南 250100)

Abstract: Magnetic properties and giant magneto-impedance (GMI) effects of FeCuCrVSiB single layered and multilayered films with Ag as the central layer and SiO2 as the isolating layers, which were prepared by radio frequency sputtering without field and with a magnetic field about 72kA/m along the films length, are investigated. The hysteresis loops of single layered films show that the samples deposited with a magnetic field possess excellent soft magnetic properties and the coercive force is only about 64A/m. After annealing at an optimum temperature of 230℃ for 1.5h, the maximum GMI ratios of single layered films are 37.5% in transverse field at the frequency of 13MHz, and the maximum GMI ratios of multilayered films is 277% at the frequency of 8.6MHz. The frequency dependence of the magneto-impedance indicates that the GMI effect in multilayered films can be very large even at relatively low frequencies.

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