Dresden 2020 – scientific programme

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MA: Fachverband Magnetismus

MA 18: Magnetic Particles and Clusters

MA 18.6: Talk

Monday, March 16, 2020, 18:00–18:15, HSZ 403

Beyond SPIONs in enhanced magnetic fluid hyperthermia — •Yevhen Ablets, Imants Dirba, and Oliver Gutfleisch — Technical University of Darmstadt, Darmstadt, Germany

Magnetic fluid hyperthermia (MFH) using magnetic nanoparticles that produce heat in response to an external alternating magnetic field offers a promising therapy in cancer treatment. Typically, superparamagnetic iron oxide nanoparticles (SPIONs), e.g., *-Fe2O3 or Fe3O4 are used, as they are inexpensive to produce, chemically stable and biocompatible. However, due to their ferrimagnetic nature the saturation magnetization remains moderate which limits the dissipated heat power when exposed to an AC magnetic field. In this work therefore, we study alternative Fe-based materials synthesized by thermal decomposition of iron pentacarbonyl in different gaseous atmospheres. The resultant nanoparticles show higher compared to iron oxides and deliver enhanced heating power. The MFH heating performance is correlated with the measured particle morphology (TEM), crystal structure (SAED) and magnetic properties (VSM).