Control of hysteretic behavior in flux concentrators

I.G. Trindade; D.C. Leitão; Y. Pogorelov; J.B. Sousa; R.C. Chaves; S. Cardoso; P.P. Freitas

doi:10.1063/1.3081012

Control of hysteretic behavior in flux concentrators

I.G. Trindade (Corresponding author), D.C. Leitão, Y. Pogorelov, J.B. Sousa, R.C. Chaves, S. Cardoso, P.P. Freitas

Research output: Contribution to journal › Article › Academic › peer-review

11 Citations (Scopus)

Abstract

The magnetic states of flux concentrators (FCs), consisting of poles and yokes with lateral dimensions in the range of 100 μm and integrating either single layer films of amorphous alloys of Co_x (Zr-Nb)_1-x with x=90 and x=88 or a synthetic antiferromagnet (SAF) of (NiFe/Ru)xn, are analyzed by Bitter pattern and magnetic force microscopy. Magnetic field sensors, placed in the gap of the FC by microfabrication processes, exhibited magnetoresistive responses strongly correlated with the magnetic states of the FC. The hysteresis of the field produced by the FC is reduced to a minimum when the SAF is used.

Original language	English
Article number	073501
Number of pages	4
Journal	Applied Physics Letters
Volume	94
Issue number	7
DOIs	https://doi.org/10.1063/1.3081012
Publication status	Published - 16 Feb 2009
Externally published	Yes

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abstract = "The magnetic states of flux concentrators (FCs), consisting of poles and yokes with lateral dimensions in the range of 100 μm and integrating either single layer films of amorphous alloys of Cox (Zr-Nb)1-x with x=90 and x=88 or a synthetic antiferromagnet (SAF) of (NiFe/Ru)xn, are analyzed by Bitter pattern and magnetic force microscopy. Magnetic field sensors, placed in the gap of the FC by microfabrication processes, exhibited magnetoresistive responses strongly correlated with the magnetic states of the FC. The hysteresis of the field produced by the FC is reduced to a minimum when the SAF is used.",

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AU - Leitão, D.C.

AU - Pogorelov, Y.

AU - Sousa, J.B.

AU - Chaves, R.C.

AU - Cardoso, S.

AU - Freitas, P.P.

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AB - The magnetic states of flux concentrators (FCs), consisting of poles and yokes with lateral dimensions in the range of 100 μm and integrating either single layer films of amorphous alloys of Cox (Zr-Nb)1-x with x=90 and x=88 or a synthetic antiferromagnet (SAF) of (NiFe/Ru)xn, are analyzed by Bitter pattern and magnetic force microscopy. Magnetic field sensors, placed in the gap of the FC by microfabrication processes, exhibited magnetoresistive responses strongly correlated with the magnetic states of the FC. The hysteresis of the field produced by the FC is reduced to a minimum when the SAF is used.

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Control of hysteretic behavior in flux concentrators

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