EMCD real space maps of Magnetospirillum magnetotacticum

M Stöger-Pollach; C D Treiber; G P Resch; D A Keays; I Ennen

doi:10.1016/j.micron.2011.01.003

EMCD real space maps of Magnetospirillum magnetotacticum

Micron. 2011 Jul;42(5):456-60. doi: 10.1016/j.micron.2011.01.003. Epub 2011 Jan 25.

Authors

M Stöger-Pollach¹, C D Treiber, G P Resch, D A Keays, I Ennen

Affiliation

¹ University Service Center for Transmission Electron Microscopy, Technische Universität Wien, Wiedner Hauptstraße 8-10, A-1040 Wien, Austria. [email protected]

PMID: 21316249
DOI: 10.1016/j.micron.2011.01.003

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.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Circular Dichroism / methods
Magnetite Nanoparticles / ultrastructure*
Magnetospirillum / ultrastructure*
Microscopy, Electron, Transmission / methods

Substances

Magnetite Nanoparticles