DocumentCode
974796
Title
Theory of ultrasonic attenuation in magnetic fluids
Author
Gotoh, K. ; Isler, W.E. ; Chung, D.Y.
Author_Institution
University of Cambridge, UK
Volume
16
Issue
2
fYear
1980
fDate
3/1/1980 12:00:00 AM
Firstpage
211
Lastpage
213
Abstract
Recent ultrasonic measurements have yielded anomalous results for the velocity and attenuation in magnetic fluids as a function of the applied field. Thus far, the experimental results have not been satisfactorily explained by a theoretical model. In the present paper, starting with Tarapov´s ferrohydro-dynamical equations, we attempt to derive an expression for the ultrasonic attenuation. Numerical calculations, with adjustable parameters, give fairly good agreement between theory and experiment for attenuation versus field angle.
Keywords
Acoustic propagation; Magnetic liquids; Attenuation measurement; Entropy; Equations; Liquid crystals; Magnetic field measurement; Magnetic fields; Magnetic liquids; Magnetic particles; Magnetic properties; Physics;
fLanguage
English
Journal_Title
Magnetics, IEEE Transactions on
Publisher
ieee
ISSN
0018-9464
Type
jour
DOI
10.1109/TMAG.1980.1060597
Filename
1060597
Link To Document