Permittivity of a magnetic fluid
The authors mathematically investigate the statics and dynamics of the orientational polarization of a magnetic liquid subjected to the combined action of electric and magnetic fields. As the liquid model an ensemble of noninteracting magnetized ellipsoids made of ferrite distributed over the volume of a nonconducting liquid matrix was used. The ferrite particles forming the suspension were assumed to be single-domain and magnetically hard particles in the frozen moments approximation. Magnetic dipole and electric quadrupole moments are determined as is the permittivity tensor which, in stationary electric and magnetic fields, becomes biaxial. In a variable electric field the permittivity becomes an explicit function of time and frequency.
- OSTI ID:
- 6937746
- Journal Information:
- Magnetohydrodynamics (Engl. Transl.); (United States), Vol. 23:2; Other Information: Translated from Magn. Gidrodin.; 23: No. 2, 50-58(Apr-Jun 1987)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
SUPERCONDUCTIVITY AND SUPERFLUIDITY
MAGNETIC LIQUIDS
ELECTROHYDRODYNAMICS
MAGNETOHYDRODYNAMICS
MATHEMATICAL MODELS
PERMITTIVITY
POLARIZATION
DIELECTRIC PROPERTIES
ELECTRIC FIELDS
ELECTRIC MOMENTS
FERRITES
FOKKER-PLANCK EQUATION
FREQUENCY DEPENDENCE
LAGRANGIAN FUNCTION
MAGNETIC DIPOLE MOMENTS
MAGNETIC FIELDS
QUADRUPOLE MOMENTS
RELAXATION TIME
TENSORS
TIME DEPENDENCE
DIFFERENTIAL EQUATIONS
DIPOLE MOMENTS
ELECTRICAL PROPERTIES
EQUATIONS
FERRIMAGNETIC MATERIALS
FLUID MECHANICS
FLUIDS
FUNCTIONS
HYDRODYNAMICS
IRON COMPOUNDS
LIQUIDS
MAGNETIC MATERIALS
MAGNETIC MOMENTS
MATERIALS
MECHANICS
OXYGEN COMPOUNDS
PARTIAL DIFFERENTIAL EQUATIONS
PHYSICAL PROPERTIES
TRANSITION ELEMENT COMPOUNDS
640430* - Fluid Physics- Magnetohydrodynamics
640440 - Fluid Physics- Electrohydrodynamics