H. Löwen, A. Menzel: Modelling and theoretical description of magnetic hybrid materials - bridging from meso to macro scales
Description
In this project, the structural and dynamical properties of magnetic hybrid materials shall be characterized using discrete dipole-spring and particle-matrix models as well as statistical theories. Our mesoscopic descriptions explicitly include the translational and rotational degrees of freedom of dipolar magnetic particles as well as elastic interactions between them resulting from an embedding polymer matrix.
On the one hand, such models are investigated analytically and numerically on different levels of complexity. On the other hand, corresponding classical many-body theories shall be developed to characterize the materials. Special focus is put for example on memory effects concerning reorientations of the dipolar moments, stress-strain behavior, dynamical aspects, as well as the influence of combined external magnetic and mechanical fields.
It is our goal to understand and describe the behavior of the materials within the framework of effective models and many-body theories guided by the results obtained from the experimental groups. On the one hand, our models shall be adjusted and refined using more microscopic input from other groups. On the other hand, starting from the mesoscopic many-body theories, a bridge to the macroscopic scales shall be established.
Simple dipole-spring models as a first starting point to develop classical many-body theories: particles with dipolar orientations ui at positions ri within a distance rc are connected by elastic springs.
Project Manager
Prof. Dr. Hartmut Löwen, Heinrich-Heine-Universität Düsseldorf
PD Dr. Andreas M. Menzel, Heinrich-Heine-Universität Düsseldorf
Staff
Peet Cremer, Heinrich-Heine-Universität Düsseldorf
Mate Puljiz, Heinrich-Heine-Universität Düsseldorf
Giorgio Pessot, Heinrich-Heine-Universität Düsseldorf
Grant period
2013 -
Publications
[1] M. A. Annunziata, A. M. Menzel, H. Löwen, J. Chem. Phys. 138, 204906 (2013).
[2] E. Allahyarov, A. M. Menzel, L. Zhu, H. Löwen, Smart Mater. Struct. 23, 115004 (2014).
[3] G. Pessot, P. Cremer, D. Y. Borin, S. Odenbach, H. Löwen, A. M. Menzel, J. Chem. Phys. 141, 124904 (2014).
[4] M. Tarama, P. Cremer, D. Y. Borin, S. Odenbach, H. Löwen, A. M. Menzel, Phys. Rev. E 90, 042311 (2014).
[5] A. M. Menzel, J. Chem. Phys. 141, 194907 (2014).
[6] A. M. Menzel, Phys. Rep. 554, 1 (2015).
[7] G. Pessot, R. Weeber, C. Holm, H. Löwen, A. M. Menzel, arXiv:1502.03707 (2015).
[8] A. Kaiser, K. Popowa, H. Löwen, arXiv: 1503.03315 (2015).
[9] C. Passow, B. ten Hagen, H. Löwen, J. Wagner, arXiv: 1503.05893 (2015).
Contact
Heinrich-Heine-Universität Düsseldorf
Institut für Theoretische Physik II: Weiche Materie
Universitätsstraße 1, Gebäude 25.32
D-40225 Düsseldorf