The sheer-contact MAGRES – a magnetic field sensor with minimal manufacturing complexity

Kluge, J.W.A. von; Acker, Heinrich; Umbach, Frank; Langheinrich, W.

doi:10.1016/s0924-4247(02)00095-x

Cited by 2 publications

(4 citation statements)

References 7 publications

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“…However, the Hall plates usually studied have geometrical dimensions much larger than the Debye length (L D ). The reported experimental results show that the silicon SC-MR sensitivity is around 6 % of relative current imbalance /Tesla [2]- [4], [6], [7].…”

Section: Introductionmentioning

confidence: 91%

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High-sensitivity split-contact magnetoresistors on lightly doped silicon substrates

Santillan-Quinonez¹,

Galup-Montoro

2014

2014 IEEE 5th Latin American Symposium on Circuits and Systems

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In this paper we show that silicon split-contact magnetoresistors with geometric dimensions of the order of the Debye length (LD) can have much higher sensitivities than the usual devices with much larger length and width than LD. Numerical simulations carried out with Comsol Multiphysics show that silicon n-type magnetoresistors with dimensions of the order of LD can have magnetic sensitivity as high as 60%/T which is ten times higher than usual sensitivities.

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Section: Introductionmentioning

confidence: 91%

“…The output signal can be a Hall voltage or a current imbalance. In the latter case, Split-Contact Magnetoresistors (SC-MR) [2]- [4] or split-contact magnetotransistors [1] are the usual devices.…”

Section: Introductionmentioning

confidence: 99%

High-sensitivity split-contact magnetoresistors on lightly doped silicon substrates

Santillan-Quinonez¹,

Galup-Montoro

2014

2014 IEEE 5th Latin American Symposium on Circuits and Systems

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“…In the second class of sensors [3]- [10] the current-lines deflection effect is enhanced and the resulting output current imbalance is measured on split-contacts. Magnetoresistors [3]- [5] and magnetotransistors [6]- [10] are the main current output sensors and their maximum reported sensitivity is similar, around 8 % of relative current imbalance /Tesla. This work focuses on magnetoresistors.…”

Section: Introductionmentioning

confidence: 98%

“…The influence of the geometry on the performance of Hall sensors was studied through experimental work [1], [3]- [5] and also by means of numerical simulations [2], [6]. Splitcontact magnetoresistors and magnetotransistors with non rectangular shapes were reported [1], [4]- [9], but without a significant improvement in their magnetic sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Enhanced sensitivity magnetoresistor with a venturi-tube shape

Santillan-Quinonez

Galup-Montoro

2012

10th IEEE International NEWCAS Conference

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Split-contact magnetoresistors (SCMs) are Hall effect sensors based on the current deflection effect of the magnetic field. We developed a simulation model of Hall sensors, including SCM, in COMSOL Multiphysics considering the transport mechanisms of diffusion and drift. We can simulate devices with a quite arbitrary shape. We use the magnitude of the current density in the deflection direction (on the longitudinal line of symmetry of the device) as a useful guide for the study of the effects of the geometry on the sensitivity to the magnetic field. Other than rectangular shapes, we propose a device with a Venturi-tube shape to increase the sensitivity of magnetoresistors.

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The sheer-contact MAGRES – a magnetic field sensor with minimal manufacturing complexity

Cited by 2 publications

References 7 publications

High-sensitivity split-contact magnetoresistors on lightly doped silicon substrates

High-sensitivity split-contact magnetoresistors on lightly doped silicon substrates

Enhanced sensitivity magnetoresistor with a venturi-tube shape

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