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Properties of Giant Magneto-Impedance Material for A Novel Integrating Magnetic Sensor

Published online by Cambridge University Press:  21 February 2011

J.G. Gore ,
G.J. Tomka ,
J. Milne ,
M.G. Maylin ,
P.T. Squire  and
D. Atkinson
J.G. Gore
Affiliation:
MSS, DERA FARNBOROUGH, FARNBOROUGH, GUI4 OLX, UNITED KINGDOM
G.J. Tomka
Affiliation:
MSS, DERA FARNBOROUGH, FARNBOROUGH, GUI4 OLX, UNITED KINGDOM
J. Milne
Affiliation:
MSS, DERA FARNBOROUGH, FARNBOROUGH, GUI4 OLX, UNITED KINGDOM
M.G. Maylin
Affiliation:
MSS, DERA FARNBOROUGH, FARNBOROUGH, GUI4 OLX, UNITED KINGDOM
P.T. Squire
Affiliation:
DEPT. OF PHYSICS, UNIVERSITY OF BATH, BATH, BA2 7AY, UNITED KINGDOM
D. Atkinson
Affiliation:
DEPT. OF PHYSICS, UNIVERSITY OF BATH, BATH, BA2 7AY, UNITED KINGDOM
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Abstract

A novel magnetic field sensor, based on the giant magneto-impedance effect is described and analysed. The sensor utilises an amorphous wire, annealed under optimised conditions. The conditions required for the optimisation of the magnetic properties of the wire are shown. The wire can be up to 2m long, and integrates the field over the length of the wire. It operates in open-loop mode. With a bias field of ∼500 A/m it achieves a sensitivity of 0.02 A/m and linearity of better than 5% for external fields between ±300 A/m.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 577: Symposium H – Advanced Hard and Soft Magnetic Materials , 1999 , 499
Copyright
Copyright © Materials Research Society 1999

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References

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