Search results for "magnetoresistance sensor"

showing 3 items of 3 documents

A Non-Invasive Thermal Drift Compensation Technique Applied to a Spin-Valve Magnetoresistive Current Sensor

2011

A compensation method for the sensitivity drift of a magnetoresistive (MR) Wheatstone bridge current sensor is proposed. The technique was carried out by placing a ruthenium temperature sensor and the MR sensor to be compensated inside a generalized impedance converter circuit (GIC). No internal modification of the sensor bridge arms is required so that the circuit is capable of compensating practical industrial sensors. The method is based on the temperature modulation of the current supplied to the bridge, which improves previous solutions based on constant current compensation. Experimental results are shown using a microfabricated spin-valve MR current sensor. The temperature compensati…

EngineeringWheatstone bridgeSpin valvemagnetoresistance sensorlcsh:Chemical technologyBiochemistryArticleRutheniumtemperature compensationAnalytical ChemistryCompensation (engineering)law.inventionMagneticslawelectrical current measurementElectric Impedancelcsh:TP1-1185Current sensorElectrical and Electronic Engineeringspin-valve sensorInstrumentationbusiness.industryTemperatureElectrical engineeringEquipment DesignAtomic and Molecular Physics and OpticsOptoelectronicsConstant currentCurrent (fluid)businessFiber optic current sensorSensitivity (electronics)Sensors
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Integration of GMR sensors with different technologies

2016

Less than thirty years after the giant magnetoresistance (GMR) effect was described, GMR sensors are the preferred choice in many applications demanding the measurement of low magnetic fields in small volumes. This rapid deployment from theoretical basis to market and state-of-the-art applications can be explained by the combination of excellent inherent properties with the feasibility of fabrication, allowing the real integration with many other standard technologies. In this paper, we present a review focusing on how this capability of integration has allowed the improvement of the inherent capabilities and, therefore, the range of application of GMR sensors. After briefly describing the …

SystemEngineeringTechnologyPerformanceIntegrationThermal agitationintegration02 engineering and technologyMicroarraylcsh:Chemical technology01 natural sciencesBiochemistryAnalytical ChemistryGMR; integration; technology:Enginyeria electrònica::Instrumentació i mesura::Sensors i actuadors [Àrees temàtiques de la UPC]MicroelectronicsAtomic and Molecular Physicslcsh:TP1-1185Instrumentation010302 applied physicsElectrical engineeringGMRDetectors021001 nanoscience & nanotechnologyFunctional systemAtomic and Molecular Physics and Optics:Enginyeria electrònica::Microelectrònica [Àrees temàtiques de la UPC]CMOStechnology0210 nano-technologyCmosGiant magnetoresistanceMicroelectrònicaNoise (electronics)ArticleFabricationLow temperature deposition0103 physical sciencesElectronic engineeringElectronicsSensitivity (control systems)Electrical and Electronic Engineeringbusiness.industryGiant magnetoresistance sensorsMultilayersNanoparticlesand OpticsElectronicsbusinessGMR; Integration; Technology; Analytical Chemistry; Atomic and Molecular Physics and Optics; Biochemistry; Electrical and Electronic Engineering
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Fractional Modeling of the AC Large-Signal Frequency Response in Magnetoresistive Current Sensors

2013

Fractional calculus is considered when derivatives and integrals of non-integer order are applied over a specific function. In the electrical and electronic domain, the transfer function dependence of a fractional filter not only by the filter order n, but additionally, of the fractional order α is an example of a great number of systems where its input-output behavior could be more exactly modeled by a fractional behavior. Following this aim, the present work shows the experimental ac large-signal frequency response of a family of electrical current sensors based in different spintronic conduction mechanisms. Using an ac characterization set-up the sensor transimpedance function  is obtain…

Transimpedance amplifierFrequency responseEngineeringMagnetoresistanceGiant magnetoresistancemagnetoresistance sensorfractional systemslcsh:Chemical technologyTopologyBiochemistryArticleAnalytical ChemistryCondensed Matter::Materials Scienceelectrical current measurementlcsh:TP1-1185Electrical and Electronic Engineeringsystems identificationInstrumentationSpintronicsbusiness.industryElectrical engineeringelectrical current measurement; magnetoresistance sensor; fractional systems; systems identificationCondensed Matter::Mesoscopic Systems and Quantum Hall EffectAtomic and Molecular Physics and OpticsFractional calculusTunnel magnetoresistanceFilter designbusinessSensors
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