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EMCD real space maps of Magnetospirillum magnetotacticum

2011; Elsevier BV; Volume: 42; Issue: 5 Linguagem: Inglês

10.1016/j.micron.2011.01.003

1878-4291

Michael Stöger‐Pollach, Christoph D. Treiber, Gwendolyn Resch, David A. Keays, Inga Ennen,

Geophysical and Geoelectrical Methods

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.