Berlin 2018 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 5: Polymer Networks and Elastomers I
CPP 5.10: Vortrag
Montag, 12. März 2018, 12:15–12:30, PC 203
FORC diagrams in different systems of magnetic elastomers studying by molecular dynamics simulations — •Alla Dobroserdova1, Pedro A. Sanchez2, 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 FORC (first-order reversal curves) diagrams to study how the matrix influences on internal magnetic interactions. We use the Molecular Dynamics Simulations to model the different systems. We consider fixed nonmagnetic particles which are connected with dipolar ones by elastic interactions. We study the systems with translational constraints only as well as the systems with translational and rotational constraints. The first step is to get the main hysteresis loop of this system in computer simulations (the direction and intensity of an external magnetic field are changing). After that we need to perform the computer simulations to obtain the first-order reversal curves. In the result, we have dependence of FORC diagrams on coercive and reversal fields. We use classical method [C. R. Pike et al., J. Appl. Phys. 85, 6660 (1999)] to get the FORC diagrams. 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).