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Single-particle mechanism of magnetostriction in magnetoactive elastomers

  • Magnetoactive elastomers (MAEs) are composite materials comprised of micrometer-sized ferromagnetic particles in a nonmagnetic elastomermatrix. Asingle-particle mechanism ofmagnetostriction in MAEs, assuming the rotation of a soft magnetic, mechanically rigid particle with uniaxial magnetic anisotropy in magnetic fields is identified and considered theoretically within the framework of an alternative model. In this mechanism, the total magnetic anisotropy energy of the filling particles in the matrix is the sum over single particles. Matrix displacements in the vicinity of the particle and the resulting direction of the magnetization vector are calculated. The effect of matrix deformation is pronounced well if the magnetic anisotropy coefficient K is much larger than the shear modulus mu of the elastic matrix. The feasibility of the proposed magnetostriction mechanism in soft magnetoactive elastomers and gels is elucidated. The magnetic-field-induced internal stresses in the matrix lead to effects of magnetodeformation and may increase the elastic moduli of these composite materials.

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Metadaten
Author:Viktor M. KalitaORCiD, Andrei A. SnarskiiORCiD, Denis Zorinets, Mikhail Shamonin (Chamonine)ORCiDGND
DOI:https://doi.org/10.1103/PhysRevE.93.062503
Parent Title (English):Physical Review E
Publisher:American Physical Society
Document Type:Article
Language:English
Year of first Publication:2016
Release Date:2022/04/24
Tag:BEHAVIOR; DEPENDENCE; Deformation; FERROGELS; HOMOGENEOUS MAGNETIC-FIELD; MICROSTRUCTURE; SENSITIVE ELASTOMERS; magnetodeformation
Volume:93
Issue:6
Article Number:062503
Institutes:Fakultät Elektro- und Informationstechnik
Fakultät Elektro- und Informationstechnik / Labor Intelligente Materialien und Strukturen
Begutachtungsstatus:peer-reviewed
research focus:Produktion und Systeme
Licence (German):Keine Lizenz - Es gilt das deutsche Urheberrecht: § 53 UrhG