ENERGY DISSIPATION IN A SOLID DISPERSION SYSTEM 
OF SINGLE-DOMAIN FERROMAGNETIC PARTICLES UNDER 
THE ACTION OF A VARIABLE LINEARLY POLARIZED FIELD

B. É. Kashevskii and I. V. Prokhorov

UDC 621.314

The heat power released as a result of magnetic hysteresis 
in a system of small ferromagnetic particles suspended in a solid 
matrix acted upon by a linearly polarized magnetic field has been 
determined theoretically and experimentally. The calculations were 
done with the use of a model of noninteracting, uniformly magnetized 
particles with uniaxial anisotropy. Acicular particles of gamma iron 
oxide were used in the experiments. It is shown that the heat power 
released as a result of magnetic hysteresis may measure several megawatts 
per cubic meter, which makes it possible to use disperse magnetic 
systems as volumetric heaters.

A. V. Luikov Heat and Mass Transfer Institute, National 
Academy of Sciences of Belarus, 15 P. Brovka Str., Minsk, 220072, 
Belarus. Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 77, 
No. 5, pp. 35-40, September-October, 2004. Original article 
submitted November 18, 2003.