Magnetoresistive Effect in Magnetoactive Elastomers

Степанов, Г. В.; Semerenko, D. A.; Bakhtiiarov, A. V.; Стороженко, П. А.

doi:10.1007/s10948-012-1853-1

Cited by 44 publications

(14 citation statements)

References 9 publications

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“…Magnetorheological elastomers (MRE) usually consist of a soft polymer matrix with magnetic particles dispersed in it [7,8,9,10,11,12]. Recent experimental studies show that MRE exhibit mechanical and electrical property changes under the external magnetic field: magnetorheological effect [13], magnetoresistance effect [14], magnetodielectric effect (MDE) [15], etc. The property changes of MRE may be explained by the displacement of particles inside the matrix.…”

Section: Introductionmentioning

confidence: 99%

Simulation of Magnetodielectric Effect in Magnetorheological Elastomers

Isaev

Семисалова

Alekhina

et al. 2019

IJMS

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We present the results of numerical simulation of magnetodielectric effect (MDE) in magnetorheological elastomers (MRE)—the change of effective permittivity of elastomer placed under the external magnetic field. The computer model of effect is based on an assumption about the displacement of magnetic particles inside the elastic matrix under the external magnetic field and the formation of chain-like structures. Such displacement of metallic particles between the planes of capacitor leads to the change of capacity, which can be considered as a change of effective permittivity of elastomer caused by magnetic field (magnetodielectric effect). In the literature, mainly the 2D approach is used to model similar effects. In this paper, we present a new approach of magnetorheological elastomers simulation—a 3D-model of the magnetodielectric effect with ability to simulate systems of 10 5 particles. Within the framework of the model, three types of particle size distributions were simulated, which gives an advantage over previously reported approaches. Lognormal size distribution was shown to give better qualitative match of the modeling and experimental results than monosized type. The developed model resulted in a good qualitative agreement with all experimental data obtained earlier for Fe-based elastomers. The proposed model is useful to study these novel functional materials, analyze the features of magnetodielectric effect and predict the optimal composition of magnetorheological elastomers for further profound experimental study.

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Section: Introductionmentioning

confidence: 99%

Simulation of Magnetodielectric Effect in Magnetorheological Elastomers

Isaev

Семисалова

Alekhina

et al. 2019

IJMS

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“…The magnetic field affects MAE through its magnetic subsystem, understandably [3][4][5][6][7]. MAE can not only be deformed, even substantially, by tens of percent, but also can change its physical properties and characteristics [8][9][10][11][12][13]. The change of MAE elastic modules has been defined as the magnetorheological effect (MRE) [14][15][16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Magnetorheological effect in elastomers containing uniaxial ferromagnetic particles

Kalita¹,

Иванова²,

Loktev³

2020

Condens. Matter Phys.

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The description of the collective magnetorheological effect induced by magnetic field in magnetoactive elastomers is proposed. The condition of consistency is used between magnetic and mechanic momenta of forces exerted on magnetically uniaxial ferromagnetic particles in elastomer at their magnetization. The study shows that even in the case of small concentration of particles, the value of magnetically-induced shear can be anomalously large, reaching up to tens of percent. The deformation of magnetoactive elastomer can evolve critically, as a second-order phase transition, if magnetic field is aligned along the easy axis of particles.

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“…This complex of magneto-mechanical features defines prospective MAEs applications as tunable dampers, vibration absorbers, seals, microactuators and even artificial muscles 4. Investigations of maneto-electric properties of MAEs have been started more recently 27–30. It has been shown that the effective dielectric constant as well as conductivity of MAEs can be tuned by external magnetic fields 30.…”

Section: Introductionmentioning

confidence: 99%

“…Investigations of maneto-electric properties of MAEs have been started more recently 27–30. It has been shown that the effective dielectric constant as well as conductivity of MAEs can be tuned by external magnetic fields 30. This fact opens up new ways of MAEs practical applications, in particular, as magnetic field sensors.…”

Section: Introductionmentioning

confidence: 99%