Advances in Magnetic Field Sensors

Ripka, Pavel; Janošek, Michal

doi:10.1109/jsen.2010.2043429

Cited by 445 publications

(244 citation statements)

References 70 publications

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“…The extremely large sensitivity of the MI effect makes it a good candidate for magnetic sensing applications, comparing favorably with other types of devices as Hall, anisotropic magnetoresistance (AMR), and giant magnetorresistance (GMR) sensors, and competing with fluxgate sensors [69].…”

Section: Brief Survey Of Applicationsmentioning

confidence: 99%

Thin-Film Magneto-Impedance Sensors

Garcı́a-Arribas¹,

Férnández²,

Cos³

2017

Magnetic Sensors - Development Trends and Applications

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We review the state-of-the-art of thin films displaying the magneto-impedance (MI) effect, with focus on the aspects that are relevant to the successful design and operation of thin film-based magnetic sensors. After a brief introduction of the MI effect, the materials and geometries that maximize the performance, together with the measurement procedure for their characterization, are exposed. A nonexhaustive survey of applications is included, mostly with the aim of displaying the capabilities of thin film structures in the field of magnetic sensing, and the variety of topics covered by them. A special emphasis is made on some concepts that are not commonly treated in the literature, such as the influence of the measuring circuit on the magneto-impedance ratio, the geometry optimization by means of numerical simulation by finite element methods, or noise measurements on thin films. Additionally, a brief description of the patterning procedure by photolithography is included, since the major advantage of thin film sensors over other types of magneto-impedance materials as ribbons or wires is the possibility of patterning the sensible element in micrometric shapes, and most of all, their easy integration with the interface microelectronic circuitry.

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Section: Brief Survey Of Applicationsmentioning

confidence: 99%

Thin-Film Magneto-Impedance Sensors

Garcı́a-Arribas¹,

Férnández²,

Cos³

2017

Magnetic Sensors - Development Trends and Applications

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“…Three basic types of miniature fluxgate can be distinguished (Ripka & Janosĕk, 2010): plane type sensors with flat coils, PCB-based devices with solenoids made by tracks and vias and 3D type sensors with micro solenoids.…”

Section: Fluxgate Sensorsmentioning

confidence: 99%

Magnetic Field Sensors Based on Microelectromechanical Systems (MEMS) Technology

Todaro¹,

Sileo²,

Vittorio³

2012

Magnetic Sensors - Principles and Applications

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“…Achieving a higher static magnetic field in a free space region will lead to a revolution in many technical areas, including improving the sensitivity of magnetic sensors [1], improving the resolution of magnetic resonance imaging (MRI) [2], improving the manipulation of drug delivery using magnetic nano-particles [3,4], etc. Apart from using an active magnet, which requires high power consumption to achieve a high static magnetic field, we can also use passive devices (so-called magnetic lenses) to obtain a high magnetic field without consuming additional energy.…”

Section: Introductionmentioning

confidence: 99%

“…Traditionally, people simply use superconductors to enhance the background DC magnetic field, which can be used to improve the sensitivity of magnetic sensors [1,[5][6][7][8]. However, these devices can only achieve an enhanced DC magnetic field in a very small region of air (e.g., a region with a diameter of 22 mm) with a very low enhancement factor (e.g., about 2 or 3 times).…”

Section: Introductionmentioning

confidence: 99%

Transformation Inside a Null-Space Region and a Dc Magnetic Funnel for Achieving an Enhanced Magnetic Flux With a Large Gradient

Sun¹,

He²

2014

PIER

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Abstract-The idea of transformation inside a null-space region is introduced for the first time, and used to design a novel DC magnetic compressor that concentrates DC magnetic flux greatly and behaves as a DC magnetic funnel. The proposed device can be used as a passive DC magnetic lens to achieve an enhanced DC magnetic field (e.g., 7.9 times or more depending on the size and other parameters of the compressor) with a large gradient (e.g., 450 T/m or more) in free space. After some theoretical approximation, the proposed device can be easily constructed by using a combination of superconductors and ferromagnetic materials. Numerical simulations are given to verify the performance of our device. The proposed method (use a null-space region as the reference space) can be extended to reduce the material requirement when designing other devices with transformation optics.

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Advances in Magnetic Field Sensors

Cited by 445 publications

References 70 publications

Thin-Film Magneto-Impedance Sensors

Thin-Film Magneto-Impedance Sensors

Magnetic Field Sensors Based on Microelectromechanical Systems (MEMS) Technology

Transformation Inside a Null-Space Region and a Dc Magnetic Funnel for Achieving an Enhanced Magnetic Flux With a Large Gradient

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