Study of the deformation of ferrofluid droplets in a magnetic field

J.-C. Bacri , D. Salin , R. Massart

We have studied the deformation of large magnetic agglomerates (2 to 20 μm) in a weak magnetic field (up to 10 gauss) for a new kind of ferrofluid. The ellipsoid shape of the agglomerate is due to a competition between magnetic energy which favours elongated agglomerates in the field direction and surface energy which favours a spherical shape. We can deduce a value of the interfacial tension of the agglomerates σ = (1.5 ± 0.2). 10-4 erg.cm -2.

Mots clés: deformation; drops; magnetic fluids; surface energy; ferrofluid droplets; magnetic agglomerates; ferrofluid; interfacial tension

Domaines: Articles anciens

J.-C. Bacri, D. Salin, R. Massart. Study of the deformation of ferrofluid droplets in a magnetic field. Journal de Physique Lettres, 1982, 43 (6), pp.179-184. ⟨10.1051/jphyslet:01982004306017900⟩. ⟨jpa-00232028⟩