Modelling magnetite biomineralisation: the interactions of proteins and Fe3O4 surfaces [PDF]
The biosynthesis of magnetite is the earliest known example of biomineralisation; how-ever, much of the detailed atomistic mechanisms by which the process occurs are unknown. Within the bacterial strain Magnetospirillum magneticum AMB-1, the formation of
Monnington, Amy Elizabeth
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Observations of viscous magnetization in multidomain magnetite [PDF]
The viscous behavior of multidomain magnetite has been directly observed in both natural and synthetic samples using Bitter pattern imaging. A computer-controlled fully automated microscope fitted with a heating stage, field coils, and digital camera was
Williams, W. +3 more
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The temperature dependences of electrical resistance (at DC and AC voltage at 1 kHz frequency) of the samples of the magnetite ore and magnetite from the contact of the syenite-porphyry with the volcanic-sedimentary rocks from the Goroblagodatskoye iron ...
V. V. Bakhterev
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Effect of Ni2+, Zn2+, and Co2+ on green rust transformation to magnetite
In this study, we investigated Ni2+, Zn2+, and Co2+ mineralogical incorporation and its effect on green rust transformation to magnetite. Mineral transformation experiments were conducted by heating green rust suspensions at 85 °C in the presence of Ni2+,
Orion Farr, Evert J. Elzinga, Nathan Yee
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Correction to “Micromagnetic models of pseudo-single domain grains of magnetite near the Verwey Transition” [PDF]
Domain structures of small pseudo-single domain (PSD) magnetite near the Verwey transition (Tυ) at ≈120 K were modeled using an unconstrained three-dimensional micromagnetic algorithm.
A. R. Muxworthy +3 more
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Magnetite and magnetotaxis in microorganisms
AbstractMagnetotactic bacteria from freshwater and marine sediments orient and navigate along geomagnetic field lines. Their magnetotactic response is based on intracellular, single magnetic domains of ferrimagnetic magnetite, which impart a permanent magnetic dipole moment to the cell.
Frankel, Richard B., Blakemore, R. P.
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Controlled biomineralization of magnetite (Fe3O4) by Magnetospirillum gryphiswaldense [PDF]
Results from a study of the chemical composition and micro-structural characteristics of bacterial magnetosomes extracted from the magnetotactic bacterial strain Magnetospirillum gryphiswaldense are presented here.
Tobler, D.J. +9 more
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Necessity of electrically conductive pili for methanogenesis with magnetite stimulation [PDF]
Background Magnetite-mediated direct interspecies electron transfer (DIET) between Geobacter and Methanosarcina species is increasingly being invoked to explain magnetite stimulation of methane production in anaerobic soils and sediments.
Oumei Wang +4 more
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Understanding viscous magnetization of multidomain magnetite [PDF]
Viscous magnetization (VM) and viscous remanent magnetization (VRM) have been measured, as a function of temperature, between room temperature and the Curie temperature using a suite of well-characterized synthetic and natural multidomain (MD) magnetite ...
Williams, W. +3 more
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Critical single-domain/multidomain grain sizes in noninteracting and interacting elongated magnetite particles: Implications for magnetosomes [PDF]
The critical size for stable single-domain (SD) behavior has been calculated as a function of grain elongation for magnetite grains using a numerical micromagnetic algorithm.
Muxworthy, Adrian R. +1 more
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