Abstract
X-ray diffraction, SEM analysis, Mossbauer spectroscopy and magnetic measurements were used to characterize three different magnetic beads (Dynabeads((R))). Maghemite (gamma-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.
Original language | English |
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Journal | Journal of Magnetism and Magnetic Materials |
Volume | 293 |
Issue number | 1 |
Pages (from-to) | 41-47 |
ISSN | 0304-8853 |
Publication status | Published - 2005 |
Keywords
- dynabeads
- x-ray diffraction
- SEM analysis
- magnetic mobility
- magnetic measurements
- Mossbauer spectroscopy
- crystallite size
- nanoparticles
- maghemite