Dresden 2017 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 30: Electronic structure of Surfaces: Magnetism and Spin Phenomena
MA 30.7: Poster
Dienstag, 21. März 2017, 18:30–20:30, P1A
Investigation of Ferromagnetism on Graphite due to Swift Heavy Ion Irradiation — •Eren Güvenilir1, Cem Kincal1, Umut Kamber1, Dilek Yildiz1,2, Clara Grygiel3, Cornelis J. Van Der Beek4, and Oğuzhan Gürlü1 — 1Istanbul Technical University, Istanbul, Turkey — 2University of Basel, Basel, Switzerland — 3Universite de Caen, Caen, France — 4Ecole Polytechnique, Palaiseau
Defect induced ferromagnetism have been reported on carbon based materials. In this work we investigated the magnetic properties of highly ordered pyrolytic graphite (HOPG) samples after irradiation with swift heavy ions (SHI). Samples were irradiated under 80° and 87.5° angle of incidence using highly charged and highly energetic Pb and U ions. Such SHI irradiation generates comet-like defects on the sample surfaces. We performed magnetic force microscopy under atmospheric ambient conditions. Our measurements revealed that comet-like defects caused by SHI irradiation have significantly higher magnetic signal compared to native defects on HOPG surfaces.