Magnetic Microstructure of Iron Sulfide Crystals in Magnetotactic Bacteria from Off-Axis Electron Holography

Author Info

T. Kasama, The Institute of Physical and Chemical Research, Japan
Mihály Pósfai, University of Veszprem
R. K. K. Chong, University of Cambridge
A. P. Finlayson, University of Cambridge
R. E. Dunin-Borkowski, University of Cambridge
Richard B. Frankel, California Polytechnic State University - San Luis ObispoFollow

Recommended Citation

Postprint version. Published in Physica B: Condensed Matter, Volume 384, Issue 1-2, October 1, 2006, pages 249-252.

The definitive version is available at https://doi.org/10.1016/j.physb.2006.06.002.

Abstract

Transmission electron microscopy, off-axis electron holography and energy-selected imaging were used to study the crystallography, morphology, and magnetic microstructure of nanoscale greigite (Fe₃S₄) magnetosomes in magnetotactic bacteria from a sulfidic habitat. The greigite magnetosomes were organized in chains, but were less ordered than magnetite magnetosomes in other bacteria. Nevertheless, the magnetosomes comprise a permanent magnetic dipole, sufficient for magnetotaxis.

Disciplines

Physics

Copyright

2006 Elsevier.