Berlin 2012 – wissenschaftliches Programm
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 16: Poster: Colloids and Complex Liquids
CPP 16.36: Poster
Dienstag, 27. März 2012, 18:15–20:45, Poster A
Magnetic properties of ferrofluids with shifted dipoles — •Taisia Prokopieva1 and Sofia Kantorovich1,2 — 1Ural Federal University, Lenin av 51, 620083, Ekaterinburg, Russia — 2Institute for Computational Physics, Pfaffenwaldring 27, 70569 Stuttgart, Germany
A statistical model has been developed to describe the magnetic properties of ferrofluids with shifted dipoles. Using the model, which is based on the "mean-field approach" [Ivanov A., Kuznetsova O., Physical Review E, 2001], we calculate the magnetization and initial susceptibility of the system of particles in which the dipole moment is shifted out from the center of mass towards the particle surface. Magnetic characteristics are calculated in the form of an expansion over the special potential of the interparticle interaction for shifted dipoles [Kantorovich S., Weeber R., Cerda J., Holm Ch., Soft Matter, 2011]. The influence of the relative shift of the magnetic moment (that is the ratio of the shift to the radius of the particle) on the magnetic properties of the system is demonstrated.