EMCD real space maps of Magnetospirillum magnetotacticum |
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| Authors: | Stöger-Pollach M Treiber C D Resch G P Keays D A Ennen I |
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| Institution: | University Service Center for Transmission Electron Microscopy, Technische Universit?t Wien, Wiedner Hauptstra?e 8-10, A-1040 Wien, Austria. stoeger@ustem.tuwien.ac.at |
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| Abstract: | In this study we combine energy loss magnetic circular dichroism (EMCD) and energy filtered transmission electron microscopy (EFTEM) to map magnetic properties of nanoparticles. We show that it is a functional tool for investigating the magnetic behaviour of bio-mineralized magnetite crystals of Magnetospirillum magnetotacticum. We find that the spatial resolution of our experimental set-up is in the range of less than 2 nm. The results are compared with EMCD studies of abiogenic magnetite. |
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