A miniature dc current sensor based on magnetoimpedance

Valenzuela, R.; Freijo, J. J.; Salcedo, A.; Vázquez, M.; Hernando, A.

doi:10.1063/1.364809

Cited by 27 publications

(9 citation statements)

References 8 publications

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“…The magnetoimpedance (MI) effect has attracted considerable interest in recent times mainly due to its potential application in high-performance sensors and sensing elements in integrated circuits, which can be used in a wide variety of sectors, such as biology and geo-studies [1,2].…”

Section: Introductionmentioning

confidence: 99%

High frequency magnetic behavior through the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered ferromagnetic thin films

Marques¹,

Mori²,

Schelp³

et al. 2012

Thin Solid Films

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We studied the dynamics of magnetization through an investigation of the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered thin films grown by magnetron sputtering. Impedance measurements were analyzed in terms of the mechanisms responsible for their variations at different frequency intervals and the magnetic and structural properties of the multilayers. Analysis of the mechanisms responsible for magnetoimpedance according to frequency and external magnetic field showed that for the CoFeB/Cu multilayer, ferromagnetic resonance (FMR) contributes significantly to the magnetoimpedance effect at frequencies close to 470 MHz. This frequency is low when compared to the results obtained for CoFeB/Ta and CoFeB/Ag multilayers and is a result of the anisotropy distribution and non-formation of regular bilayers in this sample. The MI max values occurred at different frequencies according to the used non-magnetic metal. Variations between 25% and 30% were seen for a localized frequency band, as in the case of CoFeB/Ta and CoFeB/Ag, as well as for a wide frequency range, in the case of CoFeB/Cu.

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Section: Introductionmentioning

confidence: 99%

High frequency magnetic behavior through the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered ferromagnetic thin films

Marques¹,

Mori²,

Schelp³

et al. 2012

Thin Solid Films

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“…3 Our purpose here is to analyze, in terms of a simple model, the dynamics of the magnetization reversal of sets of microwires having different size, parity, and range of dipolar coupling. Our model system corresponds to equally spaced individual microwires disposed in a ring.…”

Section: ͓S0021-8979͑98͒32711-5͔mentioning

confidence: 99%

Influence of the configurational degeneracy on the hysteretic behavior of a system of magnetostatically coupled magnetic moments

González

Chubykalo

Hernando

et al. 1998

Journal of Applied Physics

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“…Some prototype sensors employing these materials as sensing elements, i.e., magnetic field sensors [46][47][48][49][50], current sensors [51,52], position sensors [53,54], stress sensors [55,56], torque sensor [57], biosensors [58][59][60][61][62][63], were proposed and successfully developed. The current progress of GMI is thrusted toward the increase of magnetic-field sensitivity and the optimization of the signal-to-noise ratio in the GMI sensor devices [64,65].…”

Section: Introductionmentioning

confidence: 99%

Advanced Magnetic Microwires as Sensing Elements for LC-Resonant-Type Magnetoimpedance Sensors: A Comprehensive Review

Phan

2011

J Supercond Nov Magn

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In recent years, all modern vehicles and transport means use a vast variety of sensors and transducers. The operation of all medical instruments is also based on sensors and transducers. Industry is also employing more and more transducers for the monitoring and control of production lines. Therefore, the sensing technology has been driven by the increasing needs for enhanced sensitivity, improved stability, high reliability, and lower costs. For this purpose, we have proposed and developed novel two LC resonant-type magnetoimpedance (LCMI) sensor devices utilizing soft magnetic microwires as a sensing element, giving an emphasis on the use of resonance effect from LCcomponents and the rapid permeability change of the magnetic microwires to significantly improve the sensitivity performance of sensors. This article aims to provide a comprehensive analysis of the design and operation of these devices. After a description of magnetic core materials, circuit designs and fabrication techniques is given, the details of all experimental measurements are presented. The characterizations of constructed LCMI sensor devices are systematically analyzed, and the physical origins of magneto-resonant phenomena, field, and frequency dependences in these LCMI sensor devices are addressed. Influences of processing parameters on the sensing characteristics of LCMI sensors are also discussed. This enables the optimal conditions to fabricate high-performance magnetic sensing devices.

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A miniature dc current sensor based on magnetoimpedance

Cited by 27 publications

References 8 publications

High frequency magnetic behavior through the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered ferromagnetic thin films

High frequency magnetic behavior through the magnetoimpedance effect in CoFeB/(Ta, Ag, Cu) multilayered ferromagnetic thin films

Influence of the configurational degeneracy on the hysteretic behavior of a system of magnetostatically coupled magnetic moments

Advanced Magnetic Microwires as Sensing Elements for LC-Resonant-Type Magnetoimpedance Sensors: A Comprehensive Review

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