Positive/negative magnetostrictive GMR trilayer systems as strain gauges

Dokupil, S.; Bootsmann, M.-T.; Stein, S.; Löhndorf, M.; Quandt, Eckhard

doi:10.1016/j.jmmm.2004.11.400

Cited by 29 publications

(11 citation statements)

References 4 publications

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“…Due to the significant clamping effect caused by substrates, when magnetostrictive films applied in micro-force sensors and multiferroic composited materials, their key performances, such as the strain sensitivity and the magnetoelectric coupling, are strongly dependence on the magnetomechanical behaviors of magnetostrictive layers, and therefore are drastically reduced. 7,8 Recently, flexible magnetic films and spintronic devices grown on plastic substrates which can be shaped into almost any arbitrary geometry have attracted much attentions. 9,10 The deformability of substrates may partially eliminate the substrate clamping and enhance the response of magnetostrictive films to external mechanical stress.…”

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confidence: 99%

Mechanically tunable magnetic properties of Fe81Ga19 films grown on flexible substrates

Dai¹,

Zhan²,

Liu³

et al. 2012

Applied Physics Letters

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We investigated on magnetic properties of magnetostrictive Fe81Ga19 films grown on flexible polyethylene terephthalate (PET) substrates under various mechanical strains. The unstrained Fe81Ga19 films exhibit a significant uniaxial magnetic anisotropy due to a residual stress in PET substrates. It was found that the squareness of hysteresis loops can be tuned by an application of strains, inward/compressive or outward/tensile bending of the films. A modified Stoner-Wohlfarth model with considering a distribution of easy axes in polycrystalline films was developed to account for the mechanically tunable magnetic properties in flexible Fe81Ga19 films. These results provide an alternative way to tune mechanically magnetic properties, which is particularly important for developing flexible magnetoelectronic devices.

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confidence: 99%

Mechanically tunable magnetic properties of Fe81Ga19 films grown on flexible substrates

Dai¹,

Zhan²,

Liu³

et al. 2012

Applied Physics Letters

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“…The flexible MR sensors are required to be robust against mechanical bending or stretching and withstand many cycles of deformations without the degradation of sensing performance. The emergence and growth of the flexible MR sensor technology took place in the period of 1992-2007 [64][65][66][67][68][69][70][71][72]. In 1992, Parkin et al investigated the GMR effect in Co/Cu multilayers deposited on a Kapton polyimide substrate by magnetron sputtering [64].…”

Section: B Mechanically Flexible Electronicsmentioning

confidence: 99%

Magnetoresistive Sensor Development Roadmap (Non-Recording Applications)

et al. 2019

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Magnetoresistive (MR) sensors have been identified as promising candidates for the development of high-performance magnetometers due to their high sensitivity, low cost, low power consumption, and small size. The rapid advance of MR sensor technology has opened up a variety of MR sensor applications. These applications are in different areas that require MR sensors with different properties. Future MR sensor development in each of these areas requires an overview and a strategic guide. A MR sensor roadmap (non-recording applications) was therefore developed and made public by the Technical Committee of The IEEE Magnetics Society with the aim to provide an R&D guide for MR sensors intended to be used by industry, government, and academia. The roadmap was developed over a three-year period and coordinated by an international effort of 22 taskforce members from 10 countries and 17 organizations, including universities, research institutes, and sensor companies. In this paper, the current status of MR sensors for non-recording

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“…Thus, the applicability of multilayers stresses the importance of investigations on the static and dynamic magnetization properties in samples grown onto different substrates. In this way, an increasing number of researches based on multilayers grown onto rigid and flexible substrates has been published, indicating its potential impact in devices applications [7,[13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Exploring the magnetization dynamics of NiFe/Pt multilayers in flexible substrates

Corrêa

Dutra

Marcondes

et al. 2016

Materials Science and Engineering: B

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a b s t r a c tWe investigate the structural and magnetic properties, and the magnetization dynamics in Ni 81 Fe 19 /Pt multilayer systems grown onto rigid and flexible substrates. The structural characterization shows evidence of a superlattice behavior, while the quasi-static magnetization characterization reveal a weak magnetic anisotropy induced in the multilayers. The magnetization dynamics is investigated through the magnetoimpedance effect. We employ a theoretical approach to describe the experimental magnetoimpedance effect and verify the influence of the effective damping parameter on the magnetization dynamics. Experimental data and theoretical results are in agreement and suggest that the multilayers present high effective damping parameter. Moreover, our experiments raise an interesting issue on the possibility of achieving considerable MI% values, even for systems with weak magnetic anisotropy and high damping parameter grown onto flexible substrates.

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Positive/negative magnetostrictive GMR trilayer systems as strain gauges

Cited by 29 publications

References 4 publications

Mechanically tunable magnetic properties of Fe81Ga19 films grown on flexible substrates

Mechanically tunable magnetic properties of Fe81Ga19 films grown on flexible substrates

Magnetoresistive Sensor Development Roadmap (Non-Recording Applications)

Exploring the magnetization dynamics of NiFe/Pt multilayers in flexible substrates

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