Magnetic microstructure of iron sulfide crystals in magnetotactic bacteria from off-axis electron holography

T. Kasama, M. Pósfai, R. K.K. Chong, A. P. Finlayson, R. E. Dunin-Borkowski, R. B. Frankel

Research output: Contribution to journalArticle

12 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)249-252
Number of pages4
JournalPhysica B: Condensed Matter
Volume384
Issue number1-2
DOIs
Publication statusPublished - Oct 1 2006

Keywords

  • Greigite
  • Magnetic microstructure
  • Magnetosomes
  • Magnetotactic bacteria

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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