A multiscale model for thin film AMR sensors

Bartok, Andras; Daniel, Laurent; Razek, A.

doi:10.1016/j.jmmm.2012.08.020

Cited by 12 publications

(8 citation statements)

References 18 publications

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“…When a magnetic field is applied to the sensor, magnetic field data will be received. AMR sensors can be used for the quantitative measurement of magnetic field, for instance, AMR sensors are used in electronic compasses [7]. MEMS technology allows manufacturers to fabricate sensors with a size of a few millimetres [8].…”

Section: Magnetometer Types and Standard Calibration Methodsmentioning

confidence: 99%

Magnetometer Error Models of Low-Cost Land Vehicle Navigation System

Kluga¹,

Klūga²,

Vecvagars³

2016

ElAEE

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This article implies a method of magnetometer error determination. Using solid-state magnetic sensors, vehicle odometer and GPS sensor, low-cost complex navigation system for land vehicles can be realized. The methods and algorithms of magnetometer calibration are shown. Results of magnetometer calibration experiments and possibility to detect magnetometer error parameters in process of car driving are analysed. To acquire vehicle heading output, navigation system described here is developed.

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Section: Magnetometer Types and Standard Calibration Methodsmentioning

confidence: 99%

Magnetometer Error Models of Low-Cost Land Vehicle Navigation System

Kluga¹,

Klūga²,

Vecvagars³

2016

ElAEE

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“…AMR sensors offer quite a few advantages, which explains their popularity in applications. They can be [224,226] produced at low cost [227,229,231,237], are quite small [224,227], achieve a high sensitivity [224,225,233,234] with resolution well below millimetre or degree range and are still working if there is a gap between sensor and magnet [224], to name only a few. In comparison with Hall sensors they are superior in terms of sensitivity [236], lower cost and endurance to mechanical stress [226].…”

Section: Industrial Applicationsmentioning

confidence: 99%

“…Wide temperature ranges are required for operation especially in automotive and aerospace applications as the temperature can vary by more than 100 C. AMR sensors many times offer a suitable (linear) temperature dependence [226,229,233], which can be accounted for electronically [226]. Commonly used materials are mainly basic transition metals discussed in §3.1 and especially permalloy [225,[227][228][229][230]234,237,238]. The latter has many of the desired properties.…”

Section: Industrial Applicationsmentioning

confidence: 99%

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Anisotropic magnetoresistance: materials, models and applications

Ritzinger,

Výborný

2023

R. Soc. open sci.

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Resistance of certain (conductive and otherwise isotropic) ferromagnets turns out to exhibit anisotropy with respect to the direction of magnetization: R ∥ for magnetization parallel to the electric current direction is different from R ⊥ for magnetization perpendicular to the electric current direction. In this review, this century-old phenomenon is reviewed both from the perspective of materials and physical mechanisms involved. More recently, this effect has also been identified and studied in antiferromagnets. To date, sensors based on the anisotropic magnetoresistance (AMR) effect are widely used in different fields, such as the automotive industry, aerospace or in biomedical imaging.

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“…Dynamic effect was investigated by using this strategy to model the transfer effect in magnetic heads [3]. A multiscale modeling strategy based on phenomenological empirical equations is proposed to describe the performance of the magnetic field sensors [4]. It can be used to study the behavior of an AMR thin film sensor with material composition, crystallographic texture, and film thickness taken into account.…”

Section: Introductionmentioning

confidence: 99%

Probing the relationship between anisotropic magnetoresistance and magnetization of ferromagnetic films

Zhang

Chen

Zhang

2019

Physica B: Condensed Matter

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The anisotropic magnetoresistance (AMR) in thin permalloy strips was calculated at each steps during magnetization by the finite element method. The magnetization at equilibrium under different external fields was obtained by micromagnetic simulations, while the resistance with different magnetization was obtained by solving the Poisson equations iteratively until self-consistence. We find that the relation between magnetization and AMR deviates from the Stoner-Wohlfarth prediction when the magnetization is reduced from saturation. The reason is that the demagnetization is not necessarily from coherent rotation of the magnetic moment. We conclude that it is necessary to use numeric simulations to optimize the responses of AMR sensors.

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A multiscale model for thin film AMR sensors

Cited by 12 publications

References 18 publications

Magnetometer Error Models of Low-Cost Land Vehicle Navigation System

Magnetometer Error Models of Low-Cost Land Vehicle Navigation System

Anisotropic magnetoresistance: materials, models and applications

Probing the relationship between anisotropic magnetoresistance and magnetization of ferromagnetic films

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