Abstract:
Magnetic susceptibility, microstructure and EPR of cobalt-containing solid solutions with layered perovskite-like structure Bi$_5$Nb$_{3-3x}$Co$_{3x}$O$_{15-\delta}$ have been studied. Solid solutions of Bi$_5$Nb$_{3-3x}$Co$_{3x}$O$_{15-\delta}$ ($x \leqslant 0.005$) can be crystallized in tetragonal syngony (sp. gr. P4/mmm), as cobalt content increases, monoclinic distortion of the unit cell emerges at $0.005<x\leqslant 0.04$ (sp. gr. P2/m). The formation of exchange-bound aggregates of Сo(III) and Co(II) atoms predominantly with antiferromagnetic exchange types has been found in the solid solutions. EPR indirectly confirms that cobalt ions are in octahedral positions of substitution of Nb(V) ions.
Keywords:
ceramics, magnetic properties, EPR spectroscopy.
Received: 27.02.2020 Received in revised form: 06.03.2020 Accepted: 16.04.2020
Bibliographic databases:
Document Type:
Article
UDC:519.21
Language: English
Citation:
Nadezhda A. Zhuk, Vladimir P. Lutoev, Dmitriy S. Beznosikov, Andrey N. Nizovtsev, Lubov V. Rychkova, “Magnetic susceptibility and EPR study of Bi$_5$Nb$_{3-3x}$Co$_{3x}$O$_{15-\delta}$”, J. Sib. Fed. Univ. Math. Phys., 13:3 (2020), 342–349
\Bibitem{ZhuLutBez20}
\by Nadezhda~A.~Zhuk, Vladimir~P.~Lutoev, Dmitriy~S.~Beznosikov, Andrey~N.~Nizovtsev, Lubov~V.~Rychkova
\paper Magnetic susceptibility and EPR study of Bi$_5$Nb$_{3-3x}$Co$_{3x}$O$_{15-\delta}$
\jour J. Sib. Fed. Univ. Math. Phys.
\yr 2020
\vol 13
\issue 3
\pages 342--349
\mathnet{http://mi.mathnet.ru/jsfu843}
\crossref{https://doi.org/10.17516/1997-1397-2020-13-3-342-349}
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Linking options:
https://www.mathnet.ru/eng/jsfu843
https://www.mathnet.ru/eng/jsfu/v13/i3/p342
This publication is cited in the following 2 articles:
L. V. Rychkova, N. A. Sekushin, S. V. Nekipelov, B. A. Makeev, A. V. Fedorova, R. I. Korolev, N. A. Zhuk, “Dielectric and magnetic properties, NEXAFS spectroscopy of Co-doped of multicomponent bismuth niobate pyrochlore”, Ceram. Int., 47:5 (2021), 6691–6698
Vasilyeva I.E., Nekipelov V S., Makeev B.A., Krasnov A.G., Zhuk N.A., “Nexafs-Spectra and Magnetic Susceptibility of Nickel and Chromium Doped of Bismuth Niobate”, J. Sib. Fed. Univ.-Chem., 13:3 (2020), 340–348
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