Pair correlations in magnetic nanodispersed fluids |
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Authors: | E A Elfimova and A O Ivanov |
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Institution: | 1.Ural State University,Yekaterinburg,Russia |
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Abstract: | The pair distribution function of a monodisperse magnetic fluid simulated by a liquid made of dipolar hard spheres with constant
magnetic moments is calculated. The anisotropy of the pair distribution function and the related structure factor of scattering
in a dc uniform magnetic field are studied. The calculation is performed by diagrammatic expansion in the volume concentration
of particles and the interparticle magnetic-dipole interaction intensity using a thermodynamic perturbation theory. Limitation
by three-particle diagrams makes it possible to apply the results obtained to magnetic fluids with a moderate concentration.
Even for low-concentration and weakly nonideal magnetic fluids, the anisotropic interparticle magnetic-dipole correlations
in a magnetic field lead to the repulsion of particles in the direction normal to the field and to the formation of particle
dimers along the field. |
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Keywords: | |
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