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Proceedings Paper

Giant magneto-impedance in sandwiched FeSiB/Cu/FeSiB films
Author(s): Yong Zhou; Chunsheng Yang; Jinqiang Yu; Xiaolin Zhao; Haiping Mao
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Paper 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, Ha 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 Ha equals 15Oe, and is smaller than the negative GMI ratio, -7.4% at Ha 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 Ha 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.

Paper Details

Date Published: 29 November 2000
PDF: 4 pages
Proc. SPIE 4086, Fourth International Conference on Thin Film Physics and Applications, (29 November 2000); doi: 10.1117/12.408309
Show Author Affiliations
Yong Zhou, Shanghai Jiao Tong Univ. (China)
Chunsheng Yang, Shanghai Jiao Tong Univ. (China)
Jinqiang Yu, Shanghai Jiao Tong Univ. (China)
Xiaolin Zhao, Shanghai Jiao Tong Univ. (China)
Haiping Mao, Shanghai Jiao Tong Univ. (China)

Published in SPIE Proceedings Vol. 4086:
Fourth International Conference on Thin Film Physics and Applications
Junhao Chu; Pulin Liu; Yong Chang, Editor(s)

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