Giant magnetoimpedance effect enhancement by circuit matching

Raposo, V.; Vázquez, M.; Flores, A. G.; Zazo, M.; Íñiguez, J.

doi:10.1016/s0924-4247(03)00195-x

Cited by 26 publications

(23 citation statements)

References 10 publications

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“…As previously mentioned, the appearance of a GMI multiple-peak feature can be determined not only by the LC-resonance circuit, but also related to the existence of standing magnetic waves within the sample [66]. If this is the case [66], any change in microwire dimension can cause the change of number of GMI peaks.…”

Section: Influence Of Parametersmentioning

confidence: 96%

“…In the present work, it should be noted that the appearance of a multiple-peak GMI behavior is not a common feature of the frequency dependence of the GMI. It is not only determined by the LC-resonance circuit, but also is also related to the formation of standing magnetic waves within the sample [66]. This will be discussed in detail in Sect.…”

Section: Frequency Dependencementioning

confidence: 98%

“…If this is the case [66], any change in microwire dimension can cause the change of number of GMI peaks. To verify this, we used the microwires annealed at 180°C to construct the different LCMI devices with varying microwire length (d) from 2 to 9 mm.…”

Section: Influence Of Parametersmentioning

confidence: 99%

“…To improve the field sensitivity of GMI sensors, several attempts have been made by either the use of the ferromagnetic resonance effect [41,42] or of the electrical resonance from a LC-resonance electronic circuit [66][67][68][69][70]. Both methods have proved useful for developing ultrasensitive magnetic sensors that can operate at very high frequencies [71][72][73][74][75][76][77][78][79][80].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

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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Section: Influence Of Parametersmentioning

confidence: 96%

Section: Frequency Dependencementioning

confidence: 98%

Section: Influence Of Parametersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

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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“…Adapted from [32] However, that is relevant to unveil the nature of the FM2 absorption. Since it depends on the insulating intermediate layer, it seems reasonable to correlate the effect to a geometrical feature, particularly to the capacitance formed between the two magnetic metallic conductors and the insulating Pyrex layer [60,61]. The multilayer microwire can be taken as a cylindrical capacitor of internal and external radii a and b, respectively, filled by a dielectric (Pyrex) with a given capacity, C:…”

Section: Influence Of Layers Thickness: the Microwire As A Capacitormentioning

confidence: 99%

Bimagnetic Microwires, Magnetic Properties, and High-Frequency Behavior

Vázquez

Kammouni

Kurlyandskaya

et al. 2016

Novel Functional Magnetic Materials

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Amorphous magnetic metals are being investigated because of their outstanding magnetic behavior that makes them especially suitable as sensing elements in various devices [1]. Their particular magnetic behavior is a consequence of the intrinsic atomic disordering that in addition results in very interesting fundamental phenomena. Glassy metals are prepared by rapid solidification techniques that enable their preparation in planar (ribbons or thin films [2]) or cylindrical (wires) shapes [3]. Alternatively, amorphous alloys with interesting magnetic behavior can be also obtained as bulk material or can give rise to ultrasoft magnetic alloys after

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Influence of terminal electrodes onLC resonance frequencies in glass-coated Co83.2B3.3Si15.9Mn7.6 microwires

Kim

Cheo

et al. 2004

phys. stat. sol. (a)

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PACS 75.50. Kj, 76.90.+d A new super-giant magnetoresonance effect was found in LC resonators consisting of a glass-coated microwire with capacitive terminal electrodes. The changes of resonance frequencies were examined as a function of the electrode dimensions in amorphous Co 83.2 B 3.3 Si 5.9 Mn 7.6 microwires . The widths of two capacitive electrodes at the end of the microwire were varied from 3 to 6 mm, and the gap lengths between the electrodes were also varied from 6 to 9 mm. The shape of the impedance curves as a function of a dc magnetic field changed dramatically near the LC resonance frequency. The phase angle was also strongly dependent on this field. The sudden change of impedance by as much as 6400% with a change of phase angle as large as 180° is a new phenomenon, which is evidence for the occurrence of the magnetoresonance at a given intensity of the external dc field.

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Giant magnetoimpedance effect enhancement by circuit matching

Cited by 26 publications

References 10 publications

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

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

Bimagnetic Microwires, Magnetic Properties, and High-Frequency Behavior

Influence of terminal electrodes onLC resonance frequencies in glass-coated Co83.2B3.3Si15.9Mn7.6 microwires

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