Wireless Magnetoelastic Resonance Sensors: A Critical Review

Grimes, Craig A.; Mungle, Casey; Zeng, Ke; Jain, Mahaveer K.; Dreschel, William R.; Paulose, Maggie; Ong, Keat Ghee

doi:10.3390/s20700294

Cited by 194 publications

(165 citation statements)

References 26 publications

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“…[1][2][3][4][5] Similarly, freestanding beams made of ferromagnetic material as a sensor platform have been widely studied for detection of physical, chemical, and biochemical substances. [6][7][8][9][10][11][12][13] These beams operate in the longitudinal mode offering a higher resonant frequencies compared to the transverse mode. Figs.…”

Section: Introductionmentioning

confidence: 99%

Development of FeNiMoB thin film materials for microfabricated magnetoelastic sensors

Cai

Gooneratne

Cha

et al. 2012

Journal of Applied Physics

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MetglasTM 2826MB foils of 25–30 μm thickness with the composition of Fe40Ni38Mo4B18 have been used for magnetoelastic sensors in various applications over many years. This work is directed at the investigation of ∼3 μm thick iron-nickel-molybdenum-boron (FeNiMoB) thin films that are intended for integrated microsystems. The films are deposited on Si substrate by co-sputtering of iron-nickel (FeNi), molybdenum (Mo), and boron (B) targets. The results show that dopants of Mo and B can significantly change the microstructure and magnetic properties of FeNi materials. When FeNi is doped with only Mo its crystal structure changes from polycrystalline to amorphous with the increase of dopant concentration; the transition point is found at about 10 at. % of Mo content. A significant change in anisotropic magnetic properties of FeNi is also observed as the Mo dopant level increases. The coercivity of FeNi films doped with Mo decreases to a value less than one third of the value without dopant. Doping the FeNi with B together with Mo considerably decreases the value of coercivity and the out-of-plane magnetic anisotropy properties, and it also greatly changes the microstructure of the material. In addition, doping B to FeNiMo remarkably reduces the remanence of the material. The film material that is fabricated using an optimized process is magnetically as soft as amorphous MetglasTM 2826MB with a coercivity of less than 40 Am−1. The findings of this study provide us a better understanding of the effects of the compositions and microstructure of FeNiMoB thin film materials on their magnetic properties.

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Section: Introductionmentioning

confidence: 99%

Development of FeNiMoB thin film materials for microfabricated magnetoelastic sensors

Cai

Gooneratne

Cha

et al. 2012

Journal of Applied Physics

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“…Resonators consist of a magnetostrictive material, one or two exciting coils, one or two pick-up coils and eventually a support (a schematic view is given in Figure 5) [9,10]. Exciting coil, either Helmholtz type or a rather long cylindrical coil, aims to produce a homogeneous magnetic field with an alternating component and a DC component.…”

Section: Magnetostrictive Resonator 31 Structurementioning

confidence: 99%

“…As described by Grimes [10], vibrations "can be detected magnetically with a pick-up coil, acoustically with a microphone, or optically with a laser emitter and a photo-transistor." Next, we focus on resonators with vibration detection based on the Villari effect, resulting from the pick-up coil as previously mentioned.…”

Section: Magnetostrictive Resonator 31 Structurementioning

confidence: 99%

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Magneto-Elastic Resonance: Principles, Modeling and Applications

Bras¹,

Grenèche²

2017

Resonance

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The magnetostriction effects are first discussed in the frame of the magneto-elastic resonance to define important values mainly the magneto-elastic coupling factor, k 33 . We review the different magnetostrictive materials according to their developments, with a special attention to amorphous ribbons to design magnetostrictive resonators. Furthermore, we focus on the current instrumental setups including their limitations, and then on the usual measurement procedures of the resonators, particularly the frequency domain measurement. In addition, an innovative approach based on the magneto-elastic impedance is reported, together with an analytical model which establishes the complete transfer function between the input and output voltages. This model is applied to ribbon-shaped materials, particularly to determine the magneto-elastic coupling factor. These resonators are suitable to sensing applications, i.e., to estimate the influential quantities such as the temperature, magnetic fields and mass stuck on the resonating surface.

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“…That is the working principle of a magnetoelastic sensor. [16][17][18][19] This kind of sensors allow a high degree of specificity, by functionalizing the sensing material to make it react with an specific agent of the media, as can be certain gases (e.g., humidity 20 or co 2 sensors, 21 ), chemical or biological agents (pH, 22 blood coagulation, 23,24 lipoproteins, 25 ) and stress, 26 or viscosity sensors. 27 Their versatility and the fact of being interrogated without physical contacts, make those sensors very suitable and useful for several applications in different fields.…”

mentioning

confidence: 99%

Bias free magnetomechanical coupling on magnetic microwires for sensing applications

Herrero-Gómez¹,

Marı́n²,

Hernando³

2013

Applied Physics Letters

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In the present paper, we report a systematic study of the magnetoelastic resonance of amorphous magnetic microwires of composition Fe 73 Si 11 B 13 Nb 3 . The study was performed for samples annealed at different temperatures. It was observed that such microwires present the key feature of performing magnetoelastic resonance in the absence of applied field. This fact, in addition to their small size, gives the microwires unique advantages over the widespreaded ribbons, currently in use as magnetoelastic sensors. Beyond the study of the resonance, magnetic properties of the samples were studied by means of Vibrating Sample Magnetometer (VSM) measurement in order to find an explanation to their bias-free resonance property. Finally, we show two possible applications of microwire based magnetoelastic sensors, a fluid density sensor and a mass-loading sensor. In recent years, much interest and effort has been devoted to develop soft magnetic materials due to their technological potential. 1 The main use of these materials can be found in the sensing industry which includes a broad spectrum of applications ranging from the automotive, mobile communication, chemistry and biochemistry industry among many others. [2][3][4][5] Amorphous microwires are one of the most widely studied soft materials. They are fabricated by means of extracting melt-spinning Taylor technique. 6 Those microwires are composed by a metallic core and a Pyrex cover both in the lm range. The metallic core provides the magnetic behaviour while the cover has a protective and stress-inducting function. 7 The ratio between the total diameter and the magnetic core, often called aspect ratio, is one of the key parameters of such microwires, since magnetic properties depend dramatically on it. For high values of the aspect ratio, the microwires present a bistable hysteresis loop, while this bistability vanishes for low ones. 8,9 In fact, amorphous or nanocrystalline magnetic microwires are among the softest materials. Many properties of these materials have been deeply studied both from the point of view of the basic physics and the applications. 10,11 This is the case of the giant magnetoimpedance effect, 12 biestability, 13 and ferromagnetic resonance. 14 However, the magnetoelastic resonance of those materials was only thoughtfully considered a few years ago. 15 It is well known that amorphous magnetostrictive alloys present magnetoelastic nature, so those materials may perform magnetoelastic resonance when exposed to a timevarying magnetic field. The physical parameters that describe this resonance, such as the resonance frequency, the amplitude, and the damping, are functions of the material environment. For this reason, their monitorization may be used to obtain information about the media. That is the working principle of a magnetoelastic sensor. [16][17][18][19] This kind of sensors allow a high degree of specificity, by functionalizing the sensing material to make it react with an specific agent of the media, as can be certain gases (e.g., humid...

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Wireless Magnetoelastic Resonance Sensors: A Critical Review

Cited by 194 publications

References 26 publications

Development of FeNiMoB thin film materials for microfabricated magnetoelastic sensors

Development of FeNiMoB thin film materials for microfabricated magnetoelastic sensors

Magneto-Elastic Resonance: Principles, Modeling and Applications

Bias free magnetomechanical coupling on magnetic microwires for sensing applications

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