Berlin 2015 – scientific programme

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MA: Fachverband Magnetismus

MA 19: POSTER Ia

MA 19.11: Poster

Tuesday, March 17, 2015, 09:30–13:00, Poster A

Investigating the magneto-dynamics of magnetic nanoparticle ensembles by hybrid molecular and spin dynamics simulations — •Lisa Teich and Christian Schröder — Bielefeld Institute for Applied Materials Research, University of Applied Sciences Bielefeld, Wilhelm-Bertelsmann-Str. 10, 33602 Bielefeld, Germany

Ensembles of magnetic nanoparticles immersed in conductive gel matrices show promising features for the development of novel magnetoresistive sensor devices [1]. In order to simulate the structuring process of such systems one has to consider the magnetic and mechanical degrees of freedom simultaneously. Here, we present a new approach that couples molecular dynamics simulations based on HOOMD-blue [2] and classical spin dynamics simulations based on Monte Carlo and stochastic spin dynamics methods [3]. Using this approach we have investigated the magneto-dynamics of various Cobalt nanoparticle ensembles and will discuss the results.

[1] J. Meyer, T. Rempel, M. Schäfers, F. Wittbracht, C. Müller, A. V. Patel, A. Hütten, Smart Mater. Struct. 22, 025032 (2013)

[2] J. A. Anderson, C. D. Lorenz, and A. Travesset, J. Comp. Phys. 227 (10): 5342-5359 (2008)

[3] L. Engelhardt, C. Schröder, in Molecular Cluster Magnets, Ed. R. E. P. Winpenny, World Scientific Publishers, Singapore (2011)