| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1788056 | Current Applied Physics | 2009 | 5 Pages |
Magnetic colloids containing superparamagnetic Fe3O4 nanoparticles have been prepared by co-precipitation method. Three samples of citric acid coated magnetic colloids containing magnetic nanoparticles (ultra-fine particles of Fe3O4) have been obtained following three different preparation protocols. Physical tests have been performed on these samples of the magnetic colloids prepared by us (consisting mainly of Fe3O4 ultra-fine particles stabilized with citric acid (C6H8O7) and immersed in water), in order to reveal their microstructural and rheological features. Transmission electron microscopy (TEM) and magnetic measurements were the investigation methods used for the assessing of the magnetic nanoparticles size. The dimensional distribution of the ferrophase physical diameter was comparatively presented using the box-plot statistical method. Infrared absorption spectra have been recorded aiming to get some information on the magnetic fluid composition.
