Detection of wide band signal by a high frequency carrier-type magnetic probe

Tan, K.; Yamakawa, K.; Kikuchi, Takashi; Yamaguchi, Masahiro; Kayano, Yoshiki; Inoue, Hiroshi

doi:10.1063/1.2173607

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…Moreover, this finding gives a turnaround to the traditional interpretation that the GMI is the main origin of such detection, even in the case of magnetoimpeditive materials such as CoR. Although GMI is an excellent tool for dc magnetic field detection [8,7,16,17], for a SPM sample to produce a significant dc magnetic field it would be necessary to magnetize it by means of a large magnetic field (see Despite this, the authors defend that the origin of the observed detection still lies in the magnetic nature of the magnetite nanoparticles. To support this hypothesis, measurements were made using a nonmagnetic sample of Au nanoparticles (see table 1).…”

Section: Resultsmentioning

confidence: 86%

Cu impedance-based detection of superparamagnetic nanoparticles

et al. 2013

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A novel method for superparamagnetic nanoparticle detection using copper impedance as the sensing property is presented. The increase of impedance produced by the proximity of the nanoparticles in the copper is comparable to that of classical magnetoimpeditive materials. A physical interpretation of the detection in terms of the induction of eddy currents in the copper element by the oscillating magnetic moments of the particles is proposed. Experimental research has been done to support this hypothesis, namely, analyses of the influence of the driving current frequency and amplitude, and of the geometry and size of the sensing conductor. The ability of copper to quantify the number of nanoparticles was successfully verified, evidencing the great potential of this new method.

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Section: Resultsmentioning

confidence: 86%

Cu impedance-based detection of superparamagnetic nanoparticles

et al. 2013

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“…The proposed GMI sensors have the advantage of being easier to implement, less expensive, smaller, and higher performing than the GMI magnetometers being studied by the groups mentioned above. A previous study [24] proposed the use of a high-frequency magnetic probe with a 1 mm-thick glass substrate and a GMI sensor element for measuring EM radiation in a circuit.…”

Section: Introductionmentioning

confidence: 99%

A Novel Experimental Approach to the Applicability of High-Sensitivity Giant Magneto-Impedance Sensors in Magnetic Field Communication

et al. 2020

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This paper presents a new application field of a giant magneto-impedance (GMI) sensor. It shows valuable findings for the GMI sensor on the possibility of a new receiving element in magnetic field communication. The proposed GMI sensors serve as antennas and mixers in receiver systems. They have the advantage of being easily implemented and in terms of mass production and manufacturing processes due to the manufacture base on a printed circuit board (PCB). Their smaller size, lower cost, and higher sensitivity have more advantages than conventional magnetic sensors, such as the magneto-inductive, anisotropic magneto-resistive, and giant magneto-resistive sensors. Two types of PCB-based GMI sensors are proposed. The first type of GMI sensor is directly wound around the solenoid-shaped pickup coil onto an alumina insulation tube inserted with an amorphous microwire. The second type of GMI sensor has a patterned pickup coil that does not require the winding of the coil, similar to the patterned pickup coil of a micro electro-mechanical system-based GMI sensor. This GMI sensor provides a new geometry that can be easily manufactured with two PCB substrates. The proposed GMI sensors achieve the equivalent magnetic noise spectral density to the high-sensitivity characteristics of the pT/√Hz level. The equivalent magnetic noise spectral density of 1.5 pT/√Hz at 20.03 MHz is obtained for the first type of GMI sensor, and 3 pT/√Hz at 3.03 MHz is achieved the second type. The analyzed results of the bandwidth and the channel capacity for the two types of GMI sensors are acceptable. This first analysis confirms the possibility of the implementation of GMI sensors in magnetic field communication. The results of this experiment confirm the high performance of the proposed GMI sensors and their applicability in magnetic field communication. The detailed experimental results of the proposed GMI sensors are presented and discussed. INDEX TERMS Amorphous microwire, giant magneto-impedance (GMI), high sensitivity, magnetic field communication, magnetic sensor.

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Giant magnetoimpedance effects in patterned Co‐based ribbons with a meander structure

Chen

Zhou

Zhang

et al. 2009

Physica Status Solidi (a)

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Longitudinal and transverse giant magnetoimpedance (GMI) effects in micropatterned ribbons (Metglas® 2714A) with meander structure are investigated. The maximum longitudinal GMI ratio of the ribbons is 180.4% and it presents to HL = 10 Oe and an AC frequency f = 20 MHz. In the range of 0–10 Oe, the GMI sensitivity of ribbons is 8.1%/Oe at 20 MHz. The maximum transverse GMI ratio is much less than the longitudinal one and the position of GMI extreme value is corresponding to higher magnetic field. The difference between the longitudinal and the transverse GMI effect is due to two main reasons: one is the easy axis deviates from the transverse direction of the sample; another is the demagnetizing factor D⊥ effect on the longitudinal permeability. (© 2009 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Detection of wide band signal by a high frequency carrier-type magnetic probe

Cited by 8 publications

References 6 publications

Cu impedance-based detection of superparamagnetic nanoparticles

Cu impedance-based detection of superparamagnetic nanoparticles

A Novel Experimental Approach to the Applicability of High-Sensitivity Giant Magneto-Impedance Sensors in Magnetic Field Communication

Giant magnetoimpedance effects in patterned Co‐based ribbons with a meander structure

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