The thermoelastic properties and structural relaxation of magnetic liquids

The kinetic equations for one-and two-particle distribution functions were used to study the thermoelastic properties of magnetic liquids in the presence of an external not uniform magnetic field. Dynamic equations for the heat conductivity coefficient λ(ω) and thermal elastic modulus Z(ω) over a wide reduced frequency range were obtained. The asymptotic behavior of λ(ω) and Z(ω) was studied at low and high frequencies; the results were in agreement with those obtained for classic liquids by the method of molecular dynamics. The λ(ω) and Z(ω) values were calculated for a magnetic liquid based on kerosene and Fe₃O₄ magnetic particles. The numerical data on transfer coefficients and elastic properties of magnetic liquids were on the whole in agreement with the general conclusions of the statistical theory of liquids.