INFLUENCE OF THE CONCENTRATION
OF A DISPERSED PHASE AND OF THE MAGNETIC
FIELD ON THE ATTENUATION OF ULTRASONIC
WAVES IN MAGNETIC FLUIDS

A. R. Baev,a P. P. Prokhorenko,a 
and N. Alekseyukb

UDC 532.52:534.29

The regularities of the propagation of elastic waves of 
ultrasonic range in magnetic fluids have been experimentally established. 
The influence of relaxation processes - nonlocal heat exchange 
and viscous dissipation - on the coefficient of attenuation of 
sound has been revealed and a comparison to the existing theoretical 
data has been made. The dependences (anisotropic in form) of the attenuation 
of the wave's amplitude on the value and direction of the magnetic 
field have been determined and an interpretation of the results obtained 
has been proposed.

aInstitute of Applied Physics, National Academy of Sciences 
of Belarus, 16 Akademicheskaya Str., Minsk 220072, Belarus; 
bInstitute of Fundamental Problems of Technology, Polish 
Academy of Sciences, Warsaw, Poland. Translated from Inzhenerno
-Fizicheskii Zhurnal, Vol. 80, No. 5, pp. 133-140, September-October, 
2007. Original article submitted December 23, 2005.