Magnetic Properties and Giant Magnetoimpedance of FeNi-Based Nanostructured Multilayers With Variable Thickness of the Central Cu Lead

Volchkov, S. O.; Férnández, Eduardo F.; Garcı́a-Arribas, A.; Barandiarán, J.M.; Lepalovskij, V. N.; Kurlyandskaya, G.V.

doi:10.1109/tmag.2011.2157896

Cited by 32 publications

(22 citation statements)

References 17 publications

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“…The change in the peak position is related to the structure of the samples [21], and to the increasing thickness of the whole system. This frequency dependence of the sensitivity peak position is in concordance with previously reported experimental results [22]. For all of them, the sensitivity peak is found to be at frequencies just after the FMR effect starts appearing.…”

Section: Resultssupporting

confidence: 93%

Asymmetric magnetoimpedance effect in ferromagnetic multilayered biphase films

Silva

Gamino

et al. 2015

Journal of Magnetism and Magnetic Materials

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effect in ferromagnetic multilayered biphase films, Journal of Magnetism and Magnetic Materials, http://dx.We investigate the magnetoimpedance effect in ferromagnetic multilayered biphase films. We verify that the films present asymmetric magnetoimpedance behavior and, by playing with the number of the repetitions of the base structure of the multilayer and the probe current frequency, we explore the possibility of tailoring the linear region around zero magnetic field in order to achieve higher sensitivity values. The highest sensitivity is observed for the thicker film, reaching ∼ 15 mΩ/Oe at ∼ 0.52 GHz. Thus, the results open the possibilities for application of ferromagnetic multilayered biphase films with asymmetric magnetoimpedance effect in sensors devices.

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Section: Resultssupporting

confidence: 93%

Asymmetric magnetoimpedance effect in ferromagnetic multilayered biphase films

Silva

Gamino

et al. 2015

Journal of Magnetism and Magnetic Materials

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“…It is important to note that the MIR results from this study are nearly 5 times higher than the previously highest published result for electroplated thin film [15]. In addition, the MIR results are as high as the reported values for a significantly more complicated multi-layered structured [14]. Both MIR and MRR have sensitivity of ~0.2%/ Gauss at low magnetic fields.…”

Section: Of Sensorcontrasting

confidence: 60%

“…However, GMI sensors in modern consumer devices require the development of thin film miniature GMI sensors compatible with semiconductor electronics. An emphasis has been placed on improving the sensitivity of the thin film GMI sensors by creating an alternating stack of ferromagnetic film and a non-magnetic conductor such as copper [10][11][12][13][14]. Such stacks exhibit high values of transverse and longitudinal magneto impedance with longitudinal anisotropy [12].…”

Section: Introductionmentioning

confidence: 99%

Bi-Directional Giant Magneto Impedance Sensor

Uppili¹,

Daglen²

2013

AMPC

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A thin film giant magneto impedance (GMI) based on magnetic field sensor has been developed using electrodeposited Ni-Fe permalloy. Chemical composition, surface morphology, and magnetic properties of Ni-Fe permalloy were char-acterized as a function of plateup parameters, and process conditions were established to deposit a Ni-Fe thin film with a high permeability (~1000) and a low coercivity (0.6 Oersted). Conventional GMI sensors are uni-directional and are several millimeters long. In this work, a spiral-shaped sensor using electroplated Ni-Fe permalloy to detect bi-directional magnetic field is reported. Excellent bi-directional magnetic field sensing has been demonstrated using the 1 mm2 compact double-spiral structure.

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“…For instance, in Py-based sandwiched structures, the effect of open-or closed-flux configuration [20], the thickness of the magnetic layers [47], the nature of the spacers between the magnetic layers [31], and the different thickness of the central conductor [48] have been experimentally assessed. The lateral dimensions of the samples play a fundamental role in the performance as well.…”

Section: Fabrication Of MI Structuresmentioning

confidence: 99%

Thin-Film Magneto-Impedance Sensors

Garcı́a-Arribas¹,

Férnández²,

Cos³

2017

Magnetic Sensors - Development Trends and Applications

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We review the state-of-the-art of thin films displaying the magneto-impedance (MI) effect, with focus on the aspects that are relevant to the successful design and operation of thin film-based magnetic sensors. After a brief introduction of the MI effect, the materials and geometries that maximize the performance, together with the measurement procedure for their characterization, are exposed. A nonexhaustive survey of applications is included, mostly with the aim of displaying the capabilities of thin film structures in the field of magnetic sensing, and the variety of topics covered by them. A special emphasis is made on some concepts that are not commonly treated in the literature, such as the influence of the measuring circuit on the magneto-impedance ratio, the geometry optimization by means of numerical simulation by finite element methods, or noise measurements on thin films. Additionally, a brief description of the patterning procedure by photolithography is included, since the major advantage of thin film sensors over other types of magneto-impedance materials as ribbons or wires is the possibility of patterning the sensible element in micrometric shapes, and most of all, their easy integration with the interface microelectronic circuitry.

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Magnetic Properties and Giant Magnetoimpedance of FeNi-Based Nanostructured Multilayers With Variable Thickness of the Central Cu Lead

Cited by 32 publications

References 17 publications

Asymmetric magnetoimpedance effect in ferromagnetic multilayered biphase films

Asymmetric magnetoimpedance effect in ferromagnetic multilayered biphase films

Bi-Directional Giant Magneto Impedance Sensor

Thin-Film Magneto-Impedance Sensors

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