Magnetic properties and application of biomineral particles produced by bacterial culture

Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций

Конференция: International Conference on Magnetic Fluids (ICMF12); Sendai, JAPAN; Sendai, JAPAN

Год издания: 2010

Идентификатор DOI: 10.1016/j.phpro.2010.11.062

Ключевые слова: ferrihydrite nanoparticles, bacterial culture, magnetism, biomiraliztaion, Bacterial culture, Biomiraliztaion, Ferrihydrite nanoparticles, Magnetism, Antiferromagnetic orders, Bacterial cultures, Biominerals, Biomiraliztaion, Crystalline modifications, Ferrihydrites, Iron salts, Magnetic parameters, Nanomedicines, Natural objects, Numerical values, Sub-lattices, Antiferromagnetic materials, Antiferromagnetism, Bacteriology, Biomineralization, Magnetic fields, Magnetic fluids, Magnetic moments, Magnetic susceptibility, Medical nanotechnology, Nanoparticles, Nanomagnetics

Аннотация: Ferrihydrite nanoparticles (2-5 nm in size) produced by bacteria culture in the course of biomineralization of iron salt solutions from a natural medium exhibit unique magnetic properties: they are characterized by both the antiferromagnetic order inherent in a bulk ferrihydrite and the spontaneous magnetic moment due to the decompensation of spins in sublattices of a nanoparticle. The magnetic susceptibility enhanced by the superantiferromagnetism effect and the magnetic moment independent of the magnetic field provide the possibility of magnetically controlling these natural objects. This has opened up the possibilities for their use in nanomedicine and bioengineering. The results obtained from measurements of the magnetic properties of the bacterial ferrihydrite in its two main crystalline modifications are reported. This has made it possible to determine numerical values of the magnetic parameters of real biomineral nanoparticles. (C) 2010 Published by Elsevier Ltd

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Издание

Журнал: 12TH INTERNATIONAL CONFERENCE ON MAGNETIC FLUIDS ICMF12

Выпуск журнала: Vol. 9

Номера страниц: 279-282

ISSN журнала: 18753892

Место издания: AMSTERDAM

Издатель: ELSEVIER SCIENCE BV

Авторы

  • Ishchenko L.A. (Siberian Federal University)
  • Stolyar S.V. (Siberian Federal University; Siberian Branch Kirensky Institute of Physics Russian Academy of Sciences)
  • Inzhevatkin E.V. (Siberian Federal University; International Scientific Center for Research of Organism under Extreme Conditions Krasnoyarsk Scientific Center Siberian Branch)
  • Bayukov O.A. (Siberian Branch Kirensky Institute of Physics Russian Academy of Sciences)
  • Iskhakov R.S. (Siberian Branch Kirensky Institute of Physics Russian Academy of Sciences)
  • Ladygina V.P. (International Scientific Center for Research of Organism under Extreme Conditions Krasnoyarsk Scientific Center Siberian Branch)
  • Raikher Y.L. (Ural Division Institute of Continuum Media Mechanics Russian Academy of Sciences)
  • Balasoiu M. (Horia Hulubei National Institute of Physics and Nuclear Engineering; Joint Institute of Nuclear Research)

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