Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10710439 | Journal of Magnetism and Magnetic Materials | 2005 | 7 Pages |
Abstract
X-ray diffraction, SEM analysis, Mössbauer spectroscopy and magnetic measurements were used to characterize three different magnetic beads (Dynabeads®). Maghemite (γ-Fe2O3) is the predominant crystalline phase. The nanoparticles were evenly spread in the beads, and the crystal sizes were in the range of 8 nm. The nanoparticles showed superparamagnetic behaviour. The particle's intrinsic magnetization of about 340 kA/m is typical for nanoparticles of maghemite.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Geir Fonnum, Christer Johansson, Astrid Molteberg, Steen Mørup, Elin Aksnes,