Formation of Magnetite Nanoparticles at Low Temperature: From Superparamagnetic to Stable Single Domain Particles
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
The room temperature co-precipitation of ferrous and ferric iron under alkaline conditions typically yields superparamagnetic magnetite nanoparticles below a size of 20 nm. We show that at pH = 9 this method can be tuned to grow larger particles with single stable domain magnetic (> 20-30 nm) or even multi-domain behavior (> 80 nm). The crystal growth kinetics resembles surprisingly observations of magnetite crystal formation in magnetotactic bacteria. The physicochemical parameters required for mineralization in these organisms are unknown, therefore this study provides insight into which conditions could possibly prevail in the biomineralizing vesicle compartments (magnetosomes) of these bacteria.
Details
Original language | English |
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Article number | e57070 |
Journal | PloS one |
Volume | 8 |
Issue number | 3 |
Publication status | Published - 8 Mar 2013 |
Peer-reviewed | Yes |
Externally published | Yes |
External IDs
PubMed | 23520462 |
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ORCID | /0000-0002-4666-9610/work/142238947 |