On the formation of superparamagnetic iron oxide nanoclusters
Philipp Schwarz, Heinz Amenitsch, Joachim Bansmann, Johannes Biskupek, Mika Lindén · 2026
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Description
Philipp Schwarz and four colleagues show how to tune clusters of magnetic iron oxide nanoparticles by adjusting water in the recipe. These clusters, called SPION nanoclusters, serve uses from medical imaging to data work, yet control over crystal size and packing has been little discussed. The team brewed uniform clusters in the presence of a stabilizing polymer and varied the water content and cooking time. Four measurement methods tracked sizes and structure.
More water grew larger crystals inside the particles, which strengthened the pull that packs clusters together. Longer synthesis enlarged crystals further after clusters had formed. Leaving out the polymer gave bigger clusters with similar crystals. The authors propose a formation mechanism in which the crystal size reached before clustering decides whether neat round clusters form, balanced against electric repulsion. Their recipe logic lets makers dial the product toward a chosen application.
Catalog record
| CREATOR | Philipp Schwarz, Heinz Amenitsch, Joachim Bansmann, Johannes Biskupek, Mika Lindén |
|---|---|
| YEAR | 2026 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 30 KB |
| LICENSE | https://creativecommons.org/licenses/by/3.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |