2026-04-19T16:14:33Zhttps://recercat.cat/oai/requestoai:recercat.cat:2445/188102025-11-19T20:26:03Zcom_2072_1057col_2072_478822col_2072_478917
00925njm 22002777a 4500
dc
Miguel López, María del Carmen
author
Rubí Capaceti, José Miguel
author
2011-07-07T12:53:14Z
2011-07-07T12:53:14Z
1995
We have studied the relaxation dynamics of a dilute assembly of ferromagnetic particles in suspension. A formalism based on the Smoluchowski equation, describing the evolution of the probability density for the directions of the magnetic moment and of the axis of easy magnetization of the particles, has been developed. We compute the rotational viscosity from a Green-Kubo formula and give an expression for the relaxation time of the particles which comes from the dynamic equations of the correlation functions. Concerning the relaxation time for the particles, our results agree quite well with experiments performed on different samples of ferromagnetic particles for which the magnetic energy, associated with the interaction between the magnetic moments and the external field, or the energy of anisotropy plays a dominant role.
Propietats acústiques
Propietats mecàniques
Matèria condensada
Reologia
Física estadística
Termodinàmica
Propietats magnètiques
Acoustic properties
Mechanical properties
Condensed matter
Rheology
Statistical physics
Rheology
Magnetic properties
Thermodynamics
Relaxation dynamics in suspensions of ferromagnetic particles