Giant magneto-impedance in sandwiched FeSiB/Cu/FeSiB films

Yong Zhou; Chunsheng Yang; Jinqiang Yu; Xiaolin Zhao; Haiping Mao

doi:10.1117/12.408309

29 November 2000 Giant magneto-impedance in sandwiched FeSiB/Cu/FeSiB films

Yong Zhou, Chunsheng Yang, Jinqiang Yu, Xiaolin Zhao, Haiping Mao

Proceedings Volume 4086, Fourth International Conference on Thin Film Physics and Applications; (2000) https://doi.org/10.1117/12.408309
Event: 4th International Conference on Thin Film Physics and Applications, 2000, Shanghai, China

Abstract

Giant magneto-impedance (GMI) effect has been studied in the sandwiched FeSiB/Cu/FeSiB films in the frequency range of 1 - 40 MHz. With magnetic field, H_a and AC current applied along the longitudinal direction, the field dependence of the GMI ratio shows that the GMI ratio increase with magnetic field, reaching a positive maximum value at a certain field, and then gradually decreases to the negative GMI ratio. At a frequency of 5 MHz the positive maximum GMI ratio is 1.6% at H_a equals 15Oe, and is smaller than the negative GMI ratio, -7.4% at H_a equals 50Oe. With a transverse field applied, at a frequency of 5 MHz a large negative GMI ratio, -12.2% and -15.4% are obtained for H_a equals 70Oe, respectively. The larger negative GMI ratios at relatively large fields may be associated with the dispersion of easy axis and the related domain structures.

Citation Download Citation

Yong Zhou, Chunsheng Yang, Jinqiang Yu, Xiaolin Zhao, and Haiping Mao "Giant magneto-impedance in sandwiched FeSiB/Cu/FeSiB films", Proc. SPIE 4086, Fourth International Conference on Thin Film Physics and Applications, (29 November 2000); https://doi.org/10.1117/12.408309

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