Article
- 1 July 1977
- journal article
- Published by EDP Sciences in Le Journal de Physique Colloques
- Vol. 38 (C2) , C2-203
- https://doi.org/10.1051/jphyscol:1977243
Abstract
The size distribution, structure and magnetic correlations between the grains of magnetic colloids are studied by electron microscopy, small angle scattering of X-rays and magnetic measurements. For water-base colloids (Fe3O4 in water) the grains behave as hard spheres dispersed in a carrier liquid. For toluene-base colloids (Co grains) a model of a grain constituted by a core of pure cobalt and a non magnetic sheath surrounding it is proposed. In toluene-base colloids, correlations have been observed which reveal a periodicity in the intergrain spacing. Strong magnetic anisotropy is reported for both colloidsKeywords
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