Resonance absorption of ultrasonic waves in a magnetic fluid

• Autorzy: Skumiel A. , Łabowski M. , Józefczak A.
• Języki publikacji: EN

Abstrakty

EN

An external magnetic field applied to a magnetic fluid gives rise to the appearance of spherical and chain-like clusters. The present work is based on an acoustic method permitting the determination of the presence and size of the clusters by resonance absorption of an ultrasonic wave in a magnetic fluid under the influence of a magnetic field. Measurements by applying the pulse method of the variations of the ultrasonic absorption coefficient &Delta? for three frequencies in a selected magnetic fluid versus the external magnetic field strength have been reported.

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 1998
• Tom: Vol. 23, no. 2
• Strony: 195--210

Twórcy

autor

Skumiel A.

• Institute of Acoustics, Adam Mickiewicz University, Poznań

autor

Łabowski M.

• Institute of Acoustics, Adam Mickiewicz University, Poznań

autor

Józefczak A.

• Institute of Acoustics, Adam Mickiewicz University, Poznań

Bibliografia

• [1] R.W. Chantrell, A. Bradbury, J. Popplewell and S.W. Charles, Agglomerate formation in a magnetic fluid, J. Appl. Phys., 53, 2742-2744 (1982).
• [2] H.W. Davies and J.P. Llewellyn, Magnetic birefringence of ferrofluids, J. Phys. D: Appl. Phys., 12, 311-319 (1979).
• [3] W. Fertman, Magnetic liquids [in Russian], High School, Minsk 1988.
• [4] K. Henjes, Soun d propagation in magnetic fluids, Phys. Rev. E, 50, 1184-1188 (1994).
• [5] P.C . Jordan, Field dependent chain formation by ferromagnetic colloids, Molecular Physics, 38, 769-780 (1979).
• [6] B. Kamieński, Physical chemistry [in Polish], PWN, Warszawa 1963.
• [7] J.O. Kratky, H. Leopold, H. Stabinger, Enzyme structure, Methods in Enzymology, 27, Part D, Academic Press, pp. 48-100 (1973).
• [8] L.D. Landau and E.M. Lifshits, Hydrodynamics [in Polish], PWN, Warszawa 1994.
• [9] S. Taketomi, The anisotropy of the sound attenuation in magnetic fluid under external magnetic field, J. Phys. Soc. Jpn., 55, 838-844 (1986).