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MA: Fachverband Magnetismus
MA 40: Poster II: Bio- and Molecular Magnetism (1-9); Magnetic Coupling Phenomena/Exchange Bias (10-15); Magnetic Particlicles and Clusters (16-29); Micro and Nanostructured Magnetic Materials (30-51); Multiferroics (52-64); Spin Injection in Heterostructures (65-67); Spin-Dyn./Spin-Torque (68-93); Spindependent Transport (94-108)
MA 40.29: Poster
Freitag, 27. März 2009, 11:00–14:00, P1A
Magnetically filled Carbon Nanotubes for Hyperthermia — •Yulia Krupskaya1, Christopher Mahn1, Anupama Parameswaran1, Arthur Taylor2, Kai Krämer2, Anja Wolter1, Silke Hampel1, Rüdiger Klingeler1, and Bernd Büchner1 — 1Leibniz Institute for Solid State and Materials Research (IFW) Dresden, Germany — 2Department of Urology, Medical Faculty, Dresden University of Technology, Germany
We present a detailed magnetic study of filled Carbon Nanotubes (CNT), which highlights their potential for contactless magnetic heating in hyperthermia cancer treatment. We have performed magnetic field and frequency dependent AC magnetic heating experiments on Fe- and Co-filled CNT dispersions. We observe a substantial temperature increase of CNT dispersions under applied AC magnetic fields in different media. DC and AC magnetization studies were done in order to elucidate the heating mechanism. We observe a different magnetic response of CNT powders compared to CNT dispersed in aqueous solution, e.g., ferromagnetic Fe-CNT in powder do not show any hysteresis when being dispersed in liquid. Differences in the AC susceptibility confirm this observation. Our data indicate the motion of Fe-CNT in liquid under applied magnetic fields.