EMCD real space maps of Magnetospirillum magnetotacticum

► Fundamental progerss achieved in developing EMCD. ► First real space EMCD map of nanoparticle. ► Experimental conditions for EMCD mapping improved. In this study we combine energy loss magnetic circular dichroism (EMCD) and energy filtered transmission electron microscopy (EFTEM) to map magnetic p...

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Bibliographic Details
Published in:Micron (Oxford, England : 1993) England : 1993), 2011-07, Vol.42 (5), p.456-460
Main Authors: Stöger-Pollach, M., Treiber, C.D., Resch, G.P., Keays, D.A., Ennen, I.
Format: Article
Language:English
Subjects:
Biogenic magnetite
Circular Dichroism - methods
crystals
Magnetic circular dichroism
magnetic properties
magnetite
Magnetite Nanoparticles - ultrastructure
Magnetospirillum - ultrastructure
Magnetospirillum magnetotacticum
Magnetotactic bacteria
Mapping of magnetic properties
Microscopy, Electron, Transmission - methods
nanoparticles
TEM
transmission electron microscopy
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Summary:► Fundamental progerss achieved in developing EMCD. ► First real space EMCD map of nanoparticle. ► Experimental conditions for EMCD mapping improved. 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 2nm. The results are compared with EMCD studies of abiogenic magnetite.
ISSN:0968-4328
1878-4291
DOI:10.1016/j.micron.2011.01.003