Magnetization of ferrofluids with dipolar interactions: A born-mayer expansion
For ferrofluids that are described by a system of hard spheres interacting via dipolar forces we evaluate the magnetization as a function of the internal magnetic field with a Born-Mayer technique and an expansion in the dipolar coupling strength. Two different approximations are presented for the magnetization, considering different contributions to a series expansion in terms of the volume fraction of the particles and the dipolar coupling strength.
Huke
B
Institut fur Theoretische Physik, Universitat des Saarlandes, D-66041 Saarbrucken, Germany.
Lucke
M