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2008 | 113 | 1 | 573-576
Article title

Magnetic Properties of Magnetite Formed by Biomineralization and Chemical Synthesis

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EN
Abstracts
EN
In this work, the magnetic properties of biologically produced magnetite (magnetosomes) by biomineralization process were compared to those of chemically synthesized Fe_3O_4. The coercivity of 185 Oe in magnetosomes is connected with the fact that the mean diameter is larger than critical size for transition from superparamagnetic to ferromagnetic behavior. A sharp magnetic transition at 105 K (Verwey transition) is clearly present in magnetosomes while in opposite, this transition is missing in Fe_3O_4.
Keywords
EN
Publisher

Year
Volume
113
Issue
1
Pages
573-576
Physical description
Dates
published
2008-01
received
2007-07-09
Contributors
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
author
  • Institute of Experimental Physics, SAS, Watsonova 47, 040 01 Košice, Slovakia
  • Laboratory of Radiation Biology, JINR, Dubna, Russia
  • Institute of Geotechnics, SAS, Watsonova 45, 040 01 Košice, Slovakia
  • Institute of Geotechnics, SAS, Watsonova 45, 040 01 Košice, Slovakia
author
  • Institute of Electrical Engineering, SAS, Dúbravská 9, 841 04 Bratislava, Slovakia
References
  • 1. D. Schüler, J. Mol. Microbiol. Biotechnol. 1, 79 (1999)
  • 2. D. Schüler, R.B. Frankel, Appl. Microbiol. Biotechnol. 52, 464 (1999)
  • 3. Y.A. Gorby, T.J. Beverige, R.P. Blakemore, J. Bacteriol. 170, 834 (1988)
  • 4. M. Koneracká, P. Kopčanský, P. Sosa, J. Bagel'ová, M. Timko, J. Magn. Magn. Mater. 293, 271 (2005)
  • 5. N.H. Hai, R. Lemoine, S. Remoboldt, J. Magn. Magn. Mater. 293, 75 (2005)
  • 6. P. Valeri, J. Scherbakov, M. Winklhofer, Europ. Biophys. J. 26, 319 (1997)
  • 7. G.F. Goya, T.S. Berquo, F.C. Fonseca, M.P. Morales, J. Appl. Phys. 94, 3520 (2003)
Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv113n1140kz
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