title: EMCD real space maps of Magnetospirillum magnetotacticum.
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.
authors.affiliation: University Service Center for Transmission Electron Microscopy, Technische Universität Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria. stoeger@ustem.tuwien.ac.at
authors.forename: M
authors.initials: M
authors.lastname: Stöger-Pollach
authors.forename: C D
authors.initials: CD
authors.lastname: Treiber
authors.forename: G P
authors.initials: GP
authors.lastname: Resch
authors.forename: D A
authors.initials: DA
authors.lastname: Keays
authors.forename: I
authors.initials: I
authors.lastname: Ennen
mesh_terms: D002942:Circular Dichroism / Q000379:methods; D058185:Magnetite Nanoparticles / Q000648:ultrastructure*; D042201:Magnetospirillum / Q000648:ultrastructure*; D046529:Microscopy, Electron, Transmission / Q000379:methods
chemical_list: D058185:Magnetite Nanoparticles