The GMI-Hysteresis of Co67Fe4.5Cu1Si12.5B15 Amorphous Thin Strip

DOI

10.2991/aeece-15.2015.41How to use a DOI?

Keywords

GMI; amorphous thin strip; GMI-hysteresis; driving current; driving frequenc

Abstract

This paper presents the results of investigations recently done by our research group that improve the properties stability of GMI sensors by exploring the giant magneto-impedance (GMI) and the GMI-hysteresis of Co67Fe4.5Cu1Si12.5B15 amorphous thin strips, which was the most promising soft magnetic material could be used in the weak magnetic transducers. The amorphous thin strips were prepared by the so-called planar flow casting technology. With the circumferential driving mode, the changes of the GMI on the frequency of the ac current under different external magnetic field were measured on Agilent 4294A precision impedance analyzer. The maximum GMI ratio of 201.4% was observed. The field sensitivity, ( Z/Z)/ H, has reached 413.2%. Additionally, the ratio of GMI changes of the CoFeCuSiB amorphous thin strips could be control under 1%, by the optimum parameters of this amorphous strip, such as the DC current and the time of joule current annealing, the dc level and frequency of the excitation current, the driving method.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Jie Hao
AU  - Jinhui Huang
AU  - Ang Ding
AU  - Kunming Qian
AU  - Yansong Zhang
AU  - Mingli Li
AU  - Song Ji
AU  - Mi Yan
PY  - 2015/09
DA  - 2015/09
TI  - The GMI-Hysteresis of Co67Fe4.5Cu1Si12.5B15 Amorphous Thin Strip
BT  - Proceedings of the International Conference on Advances in Energy, Environment and Chemical Engineering
PB  - Atlantis Press
SP  - 208
EP  - 214
SN  - 2352-5401
UR  - https://doi.org/10.2991/aeece-15.2015.41
DO  - 10.2991/aeece-15.2015.41
ID  - Hao2015/09
ER  -