Magnetostriction in elastomers with mixtures of magnetically hard and soft microparticles: effects of nonlinear magnetization and matrix rigidity

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Magnetostriction in elastomers with mixtures of magnetically hard and soft microparticles: effects of nonlinear magnetization and matrix rigidity. / Stolbov, Oleg V.; Sánchez, Pedro A.; Kantorovich, Sofia S. et al.
In: Physical Sciences Reviews, Vol. 7, No. 10, 01.10.2022, p. 1187-1208.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{2d090a72b0c44c889bac6e1569de814f,

title = "Magnetostriction in elastomers with mixtures of magnetically hard and soft microparticles: effects of nonlinear magnetization and matrix rigidity",

abstract = "In this contribution, a magnetoactive elastomer (MAE) of mixed content, i.e., a polymer matrix filled with a mixture of magnetically soft and magnetically hard spherical particles, is considered. The object we focus on is an elementary unit of this composite, for which we take a set consisting of a permanent spherical micromagnet surrounded by an elastomer layer filled with magnetically soft microparticles. We present a comparative treatment of this unit from two essentially different viewpoints. The first one is a coarse-grained molecular dynamics simulation model, which presents the composite as a bead-spring assembly and is able to deliver information of all the microstructural changes of the assembly. The second approach is entirely based on the continuum magnetomechanical description of the system, whose direct yield is the macroscopic field-induced response of the MAE to external field, as this model ignores all the microstructural details of the magnetization process. We find that, differing in certain details, both frameworks are coherent in predicting that a unit comprising magnetically soft and hard particles may display a nontrivial reentrant (prolate/oblate/prolate) axial deformation under variation of the applied field strength. The flexibility of the proposed combination of the two complementary frameworks enables us to look deeper into the manifestation of the magnetic response: with respect to the magnetically soft particles, we compare the linear regime of magnetization to that with saturation, which we describe by the Fr{\"o}hlich-Kennelly approximation; with respect to the polymer matrix, we analyze the dependence of the reentrant deformation on its rigidity. {\textcopyright} 2020 Oleg V. Stolbov et al., published by De Gruyter, Berlin/Boston 2020.",

keywords = "magnetically hard microparticles, magnetoactive elastomer, magnetostriction effect",

author = "Stolbov, {Oleg V.} and S{\'a}nchez, {Pedro A.} and Kantorovich, {Sofia S.} and Raikher, {Yuriy L.}",

year = "2022",

month = oct,

day = "1",

doi = "10.1515/psr-2020-0009",

language = "English",

volume = "7",

pages = "1187--1208",

journal = "Physical Sciences Reviews",

issn = "2365-659X",

publisher = "Walter de Gruyter",

number = "10",

}

RIS

TY - JOUR

T1 - Magnetostriction in elastomers with mixtures of magnetically hard and soft microparticles: effects of nonlinear magnetization and matrix rigidity

AU - Stolbov, Oleg V.

AU - Sánchez, Pedro A.

AU - Kantorovich, Sofia S.

AU - Raikher, Yuriy L.

PY - 2022/10/1

Y1 - 2022/10/1

N2 - In this contribution, a magnetoactive elastomer (MAE) of mixed content, i.e., a polymer matrix filled with a mixture of magnetically soft and magnetically hard spherical particles, is considered. The object we focus on is an elementary unit of this composite, for which we take a set consisting of a permanent spherical micromagnet surrounded by an elastomer layer filled with magnetically soft microparticles. We present a comparative treatment of this unit from two essentially different viewpoints. The first one is a coarse-grained molecular dynamics simulation model, which presents the composite as a bead-spring assembly and is able to deliver information of all the microstructural changes of the assembly. The second approach is entirely based on the continuum magnetomechanical description of the system, whose direct yield is the macroscopic field-induced response of the MAE to external field, as this model ignores all the microstructural details of the magnetization process. We find that, differing in certain details, both frameworks are coherent in predicting that a unit comprising magnetically soft and hard particles may display a nontrivial reentrant (prolate/oblate/prolate) axial deformation under variation of the applied field strength. The flexibility of the proposed combination of the two complementary frameworks enables us to look deeper into the manifestation of the magnetic response: with respect to the magnetically soft particles, we compare the linear regime of magnetization to that with saturation, which we describe by the Fröhlich-Kennelly approximation; with respect to the polymer matrix, we analyze the dependence of the reentrant deformation on its rigidity. © 2020 Oleg V. Stolbov et al., published by De Gruyter, Berlin/Boston 2020.

AB - In this contribution, a magnetoactive elastomer (MAE) of mixed content, i.e., a polymer matrix filled with a mixture of magnetically soft and magnetically hard spherical particles, is considered. The object we focus on is an elementary unit of this composite, for which we take a set consisting of a permanent spherical micromagnet surrounded by an elastomer layer filled with magnetically soft microparticles. We present a comparative treatment of this unit from two essentially different viewpoints. The first one is a coarse-grained molecular dynamics simulation model, which presents the composite as a bead-spring assembly and is able to deliver information of all the microstructural changes of the assembly. The second approach is entirely based on the continuum magnetomechanical description of the system, whose direct yield is the macroscopic field-induced response of the MAE to external field, as this model ignores all the microstructural details of the magnetization process. We find that, differing in certain details, both frameworks are coherent in predicting that a unit comprising magnetically soft and hard particles may display a nontrivial reentrant (prolate/oblate/prolate) axial deformation under variation of the applied field strength. The flexibility of the proposed combination of the two complementary frameworks enables us to look deeper into the manifestation of the magnetic response: with respect to the magnetically soft particles, we compare the linear regime of magnetization to that with saturation, which we describe by the Fröhlich-Kennelly approximation; with respect to the polymer matrix, we analyze the dependence of the reentrant deformation on its rigidity. © 2020 Oleg V. Stolbov et al., published by De Gruyter, Berlin/Boston 2020.

KW - magnetically hard microparticles

KW - magnetoactive elastomer

KW - magnetostriction effect

UR - https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=tsmetrics&SrcApp=tsm_test&DestApp=WOS_CPL&DestLinkType=FullRecord&KeyUT=000870949000006

UR - http://www.scopus.com/inward/record.url?scp=85097512287&partnerID=8YFLogxK

U2 - 10.1515/psr-2020-0009

DO - 10.1515/psr-2020-0009

M3 - Article

VL - 7

SP - 1187

EP - 1208

JO - Physical Sciences Reviews

JF - Physical Sciences Reviews

SN - 2365-659X

IS - 10

ER -

ID: 31576032