Regensburg 2019 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 38: Polymer Networks and Elastomers
CPP 38.4: Vortrag
Mittwoch, 3. April 2019, 12:15–12:30, H18
FORCs diagrams for magnetoactive elastomers studying by molecular dynamics simulations — •Alla Dobroserdova1, Pedro Antonio Sanchez Romero1,2, and Sofia Kantorovich1,2 — 1Ural Federal University, Ekaterinburg, Russia — 2University of Vienna, Vienna, Austria
Magnetic elastomers are the systems consisting of magnetic particles distributed in a nonmagnetic elastic matrix. We use the FORCs (first-order reversal curves) diagrams to study how the matrix influences internal magnetic interactions. We consider several models of magnetoactive elastomers. We use the Molecular Dynamics Simulations to study the different systems. In order to introduce the elastic interactions we consider fixed nonmagnetic particles which are connected with dipolar ones by springs. As the simplest case, we consider spherical magnetic particles in an elastic matrix. As an extension, we take into account the shape anisotropy of magnetic particles. We also study magnetic particles with flake-like shapes. In order to plot the FORCs distribution we use a classical method [C. R. Pike et al., J. Appl. Phys. 85, 6660 (1999)]. The research was supported by the Ministry of Education and Science of the RF (project 3.1438.2017/4.6) and Austrian Science Fund (FWF, START-Project No. Y 627-N27).