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Dresden 2014 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 29: Colloids and Complex Liquids I

CPP 29.10: Talk

Wednesday, April 2, 2014, 12:00–12:15, ZEU 114

Structural micro and macroproperties of the magnetic anisotropic particles systems — •Elena Pyanzina1, Alla Muratova1, and Sofia Kantorovich1,21Ural Federal University, Lenin av. 51, 620000, Ekaterinburg, Russia — 2University of Vienna, Sensengasse 8, 1090, Wien, Austria

Magnetic anisotropic particles in the last several years became an independent fast-emerging branch of dipolar soft matter research. In this contribution we focus our attention on the magnetic particles with shape anisotropy (essentially ellipsoids), which leads to the orientation-dependent steric interparticle interaction. The magnetic part of the interaction will be characterized by simple magnetic dipole-dipole interaction, with the dipole moment being always fixed in the particle's centre of mass, but with different orientation (along/perpendicular to the main axis). We present the study of microstructure and macroscopical properties (e.g., compressibility and diffusion coefficient) for the systems with different dipole orientation and particle anisotropy. We show that cluster topology, size-distribution, and average magnetic moment strongly depend on the system parameters. As a result macroscopic responses of the systems drastically change with particle anisotropy and the dipole orientation. This may prove to be very important in various medical and industrial applications, where a bottom up design of materials plays a crucial part.

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