Giant Magnetoresistance (GMR) Sensors

Reig, C.; Cardoso, Susana; Mukhopadhyay, Subhas Chandra

doi:10.1007/978-3-642-37172-1

Cited by 79 publications

(45 citation statements)

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“…1,2 Although the CoFeB multilayered heterostructures have been studied for a long time, 3,4 they still evoke increasing scientific interest.…”

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confidence: 99%

“…This method complicates sensor technology, impedes realization of the remote verification of logic states, and requires masterly microsystem engineering. Even though researchers have developed and are developing various testing schemes, one still can see majority more or less probe the stable/equilibrium GMR sensor state probed under a DC current simultaneously with alternative kinds of methods, including optical monitoring by the Kerr effect [3][4][5] and AC magnetoimpedance method (MI). [6][7][8][9] Magnetoimpedance (MI) effects in multilayered spin valves, magnetic tunneling junctions, heterostructures manifesting Giant Magneto Resistance (GMR), and ensembles of nanoparticles and nanowires are well known.…”

mentioning

confidence: 99%

“…[1][2][3][4][5] Widely adopted measurements of resistance with electrical contacts on the sample surface are very complicate procedures requiring special conditions for contact deposition. This method complicates sensor technology, impedes realization of the remote verification of logic states, and requires masterly microsystem engineering.…”

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confidence: 99%

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Remote microwave monitoring of magnetization switching in CoFeB/Ta/CoFeB spin logic device

Моргунов

L’vova

Таланцев

et al. 2017

Applied Physics Letters

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Stable magnetic states of the MgO/CoFeB/Ta/CoFeB/MgO/Ta spin valve as well as transitions between the states were detected by microwave magnetoresistance (MMR) measured in the cavity of an electron spin resonance spectrometer. Advantages of this experimental technique are the possibility to study the orientation dependence of the MMR, the absence of the additional contact/sample interfaces, the wireless control of the spin valves, and the compatibility of the MMR measurements with ferromagnetic resonance experiments. The magnetic field dependence of the first derivation of the microwave absorption allows one to judge about the negative magnetoresistance of the layers and positive interlayer giant magnetoresistance. The obtained experimental results could be used for engineering of the microwave high sensitive sensors available for remote identification of the stable magnetic and logic states of the spin valves needful in medical spintronics to detect biological objects labeled with nanoparticles.

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“…1,2 Although the CoFeB multilayered heterostructures have been studied for a long time, 3,4 they still evoke increasing scientific interest.…”

mentioning

confidence: 99%

mentioning

confidence: 99%

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Remote microwave monitoring of magnetization switching in CoFeB/Ta/CoFeB spin logic device

Моргунов

L’vova

Таланцев

et al. 2017

Applied Physics Letters

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“…By using the biasing coil and feedback Differential-to-single ended Wheatstone bridge output by using a voltage differential amplifier (adopted from Ref. [26]). …”

Section: Magnetic Sensors -Development Trends and Applicationsmentioning

confidence: 99%

Giant Magnetoresistance Sensors Based on Ferrite Material and Its Applications

Djamal¹,

Ramli²

2017

Magnetic Sensors - Development Trends and Applications

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In recent decades, new magnetic sensors based on giant magnetoresistance (GMR) have been studied and developed intensively. GMR materials have great potential for next-generation magnetic field sensing devices. The GMR material has many attractive features, for example, its electric and magnetic properties can be varied in a very wide range, low power consumption, and small size. Therefore, GMR material has been developed into various applications of sensor based on magnetic field sensings, such as magnetic field sensor, a current sensor, linear and rotary position sensor, data storage, head recording, nonvolatile magnetic random access memory, and biosensor. In this chapter, the recent development of a GMR thin-film-based ferrite material will be reviewed. Furthermore, recent and future trend application of GMR sensor will be discussed.

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“…Among different kinds of magnetic sensors, such as Hall sensors or GMI devices, a multilayered giant magnetoresistance (GMR) has been shown to have the greatest potential for success in the biological samples [8][9][10][11] and in cancer treatment [12]. Briefly, GMR refers to a large change, in general a reduction, in resistance (typically 10 to 20%) when the devices are subjected to a magnetic field composed of alternating ferromagnetic and nonmagnetic layers [13].…”

Section: Introductionmentioning

confidence: 99%

Characterization of a Needle-Type Giant Magnetoresistance Sensor for Detection of Escherichia Coli’S Magnetic Marker

Shirzadfar

Nadi

Kourtiche

et al. 2015

International Journal on Smart Sensing and Intelligent Systems

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Abstract-In the recent years, the introduction and development of simple and portable sensors has been the focus of researchers in nearly all scientific domains, particularly in the biomedical settings.Giant magnetoresistance (GMR) provides a cutting-edge sensor technology. The GMR-based sensors are capable to affordably and sensitively detect and quantify micro-and nano-magnetic particles, even in very weak magnetic fields.In this paper, we introduce a highly sensitive needle-type GMR-based sensor, designed for the identification and quantification of Escherichia coli O157:H7 bacteria covered by superparamagnetic beads, Dynabeads® MAX E.coli O157. The sensor characteristics, measurement system setup and the properties of the magnetic marker solution are discussed in detail.Index terms: Giant magnetoresistance (GMR) sensor, Escherichia coli O157:H7, magnetic marker, sensor sensitivity, magnetic fluid weight density, magnetic field.

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Giant Magnetoresistance (GMR) Sensors

Cited by 79 publications

References 0 publications

Remote microwave monitoring of magnetization switching in CoFeB/Ta/CoFeB spin logic device

Remote microwave monitoring of magnetization switching in CoFeB/Ta/CoFeB spin logic device

Giant Magnetoresistance Sensors Based on Ferrite Material and Its Applications

Characterization of a Needle-Type Giant Magnetoresistance Sensor for Detection of Escherichia Coli’S Magnetic Marker

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