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Electron microscopy and 57 Fe Mössbauer spectra of 10 nm particles, intermediate in composition between Fe 3 O 4 and γ‐Fe 2 O 3 , produced by bacteria
Author(s) -
Hanzlik M.,
Petersen N.,
Keller R.,
Schmidbauer E.
Publication year - 1996
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/96gl00249
Subject(s) - maghemite , magnetite , transmission electron microscopy , analytical chemistry (journal) , mössbauer spectroscopy , materials science , spectral line , crystallography , chemistry , physics , nanotechnology , metallurgy , chromatography , astronomy
An analysis was made of magnetic 10 nm particles produced by bacteria under anaerobic conditions in an aqueous liquid. By means of transmission electron microscopy, applying electron diffraction, the particles were found to consist of Fe 3 O 4 (magnetite) or γ‐Fe 2 O 3 (maghemite). Low temperature 57 Fe Mössbauer spectra showed the particles to consist probably of an intermediate solid solution between both compounds.