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J. Sib. Fed. Univ. Math. Phys., 2017, Volume 10, Issue 2, Pages 252–256 (Mi jsfu548)  

Day plots of bacterial magnetite from sediments of Shira lake (Khakassia, Russia)

Sergey V. Semenovab, Dmitry A. Balaevab, Kirill A. Shaykhutdinovb, Denis Yu. Rogozinca

a Siberian Federal University, Svobodny, 79, Krasnoyarsk, 660041, Russia
b Kirensky Institute of Physics SB RAS, Akademgorodok, 50/38, Krasnoyarsk, 660036, Russia
c Institute of Biophysics SB RAS, Akademgorodok, 50/50, Krasnoyarsk, 660036, Russia

Abstract: The domain state of magnetite detected in sediments of Shira lake (Khakassia, Russia) was examined by means of magnetic hysteresis. Analysis of experimental data obtained on samples from different parts of bottom sediment cores in terms of Day plots allowed us to conclude that magnetite particles are in the pseudo-single-domain state. This indicates respectively small size of magnetite particles ($< 100$ nm) and reveals their bacterial origin. Biogenic magnetite buried in the bottom sediments can indicate the climatic changes in the Shira lake level in the Late Holocene.

Keywords: nanoparticles, magnetic hysteresis, bacterial magnetite.

Funding Agency Grant Number
Russian Foundation for Basic Research 15-45-04272_r_sibir'_a
Ministry of Education and Science of the Russian Federation NSh-9249.2016.5
The work was supported by Russian Foundation for Basic Research and Krasnoyarsk Regional Scientific Foundation, Grant no. 15-45-04272 and partially supported by the Council on grants from the President of the Russian Federation for support of leading scientific schools (grant NSh-9249.2016.5).


DOI: https://doi.org/10.17516/1997-1397-2017-10-2-252-256

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UDC: 538.9
Received: 10.08.2016
Received in revised form: 10.11.2016
Accepted: 20.01.2017
Language:

Citation: Sergey V. Semenov, Dmitry A. Balaev, Kirill A. Shaykhutdinov, Denis Yu. Rogozin, “Day plots of bacterial magnetite from sediments of Shira lake (Khakassia, Russia)”, J. Sib. Fed. Univ. Math. Phys., 10:2 (2017), 252–256

Citation in format AMSBIB
\Bibitem{SemBalSha17}
\by Sergey~V.~Semenov, Dmitry~A.~Balaev, Kirill~A.~Shaykhutdinov, Denis~Yu.~Rogozin
\paper Day plots of bacterial magnetite from sediments of Shira lake (Khakassia, Russia)
\jour J. Sib. Fed. Univ. Math. Phys.
\yr 2017
\vol 10
\issue 2
\pages 252--256
\mathnet{http://mi.mathnet.ru/jsfu548}
\crossref{https://doi.org/10.17516/1997-1397-2017-10-2-252-256}
\isi{http://gateway.isiknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&DestLinkType=FullRecord&DestApp=ALL_WOS&KeyUT=000412014600015}


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  • Журнал Сибирского федерального университета. Серия "Математика и физика"
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