Rosensweig instability in ferrofluids

E. I. Kats
2011 Low temperature physics (Woodbury, N.Y., Print)  
We propose a simple model to analyze stability of the free surface of horizontally unbound ferrofluid in a vertical magnetic field. With respect to the well known Rosensweig instability (see e.g., R.E.Rosensweig, Ferro hydrodynamics, Cambridge University Press, Cambridge (1993) and references therein) we go one step further to include into consideration coupling of surface displacements to non-magnetic degree of freedoms. We show that the coupling can lead to a considerable reduction of the
more » ... ical magnetic field and as well yields to nontrivial depletion layering near the surface. PACS: 47.20.Mа Interfacial instabilities; 75.50.Mm Magnetic liquids.
doi:10.1063/1.3670022 fatcat:ucdgehh6urhdrdumgnawmgn5je