Search Results - "Platunov, M.S"

Superparamagnetic blocking and magnetic interactions in nanoferrihydrite adsorbed on biomineralized nanorod-shaped Fe3S4 crystallites by Knyazev, Yu.V., Ikkert, O.P., Semenov, S.V., Volochaev, M.N., Molokeev, M.S., Platunov, M.S., Khramov, E.V., Dubrovskiy, A.A., Shestakov, N.P., Smorodina, E.D., Karnachuk, O.V., Balaev, D.A.

“…A composite based on nanorod-shaped greigite (Fe3S4) crystallites with adsorbed ferrihydrite (Fe2O3 ‧ nH2O) nanoparticles has been synthesized. The synthesis…”
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Transformation of structure and magnetic properties of Cu2MnBO5 under partial Mn3+ → Fe3+ substitution by Moshkina, E.M., Platunov, M.S., Seryotkin, Yu.V., Bovina, A.F., Eremin, E.V., Sofronova, S.N., Bezmaternykh, L.N.

“…•Three single crystal samples of Cu2Mn1-xFexBO5 ludwigites have been synthesized.•Type of monoclinic distortions of octahedra is close to Cu2FeBO5 for all the…”
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Structural and electron transport properties of CaFe2O4 synthesized in air and in helium atmosphere by Knyazev, Yu.V., Tarasov, A.S., Platunov, M.S., Trigub, A.L., Bayukov, O.A., Boronin, A.I., Solovyov, L.A., Rabchevskii, E.V., Shishkina, N.N., Anshits, A.G.

“…The samples with the CaFe2O4-type crystal structure were obtained by the solid-state reaction method at 1000 °C in the air and the helium atmosphere for the…”
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Giant hydrogen effect on the structure and physical properties of ZnO and Co-doped ZnO films fabricated by the RF magnetron sputtering in Ar + H2 atmosphere by Edelman, I.S., Chou, Hsiung, Samoshkina, Yu.E., Petrov, D.A., Lin, Hsien C., Chan, Wen L., Sun, Shih-Jye, Zharkov, S.M., Bondarenko, G.V., Platunov, M.S., Rogalev, A.

“…•ZnO and Co doped ZnO films were synthesized with RF magnetron sputtering at high H2 (≥20%) concentration in a chamber.•The Zn:Co ratio in the films was…”
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Fe-induced enhancement of antiferromagnetic spin correlations in Mn2−xFexBO4 by Kazak, N.V., Platunov, M.S., Knyazev, Yu.V., Moshkina, E.M., Gavrilkin, S.Yu, Bayukov, O.A, Gorev, M.V., Pogoreltsev, E.I., Zeer, G.M., Zharkov, S.M., Ovchinnikov, S.G.

“…•The Fe3+ ions distribution was studied by means of Mössbauer Effect.•The progressive increase of afm short-range-order spin correlations was observed.•The…”
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Spin-glass behavior in single crystals of hetero-metallic magnetic warwickites MgFeBO4, Mg0.5Co0.5FeBO4, and CoFeBO4 by Arauzo, A., Kazak, N.V., Ivanova, N.B., Platunov, M.S., Knyazev, Yu.V., Bayukov, O.A., Bezmaternykh, L.N., Lyubutin, I.S., Frolov, K.V., Ovchinnikov, S.G., Bartolomé, J.

“…Magnetic properties of heterometallic warwickites MgFeBO4, Mg0.5Co0.5FeBO4, and CoFeBO4 are presented, highlighting the effect of Co substitution on the…”
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Magnetic properties of [Co.sup.2+.sub.2][Co.sup.3+.sub.1-x][Fe.sup.3+.sub.x]B[O.sub.5] by Knyazev, Yu.V, Kazak, N.V, Bayukov, O.A, Platunov, M.S, Velikanov, D.A, Bezmaternykh, L.N, Ivanova, N.B, Ovchinnikov, S.G

“…The investigation of mixed Co-Fe ludwigite single crystals shows that their magnetic properties are close to the magnetic properties of [Fe.sub.3][BO.sub.5]…”
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Magnetic properties of [Co.sup.2+.sub.2][Co.sup.3+.sub.1-x][Fe.sup.3+.sub.x]B[O.sub.5] single crystals with a ludwigite structure by Knyazev, Yu.V, Kazak, N.V, Bayukov, O.A, Platunov, M.S, Velikanov, D.A, Bezmaternykh, L.N, Ivanova, N.B, Ovchinnikov, S.G

“…The investigation of mixed Co-Fe ludwigite single crystals shows that their magnetic properties are close to the magnetic properties of [Fe.sub.3][BO.sub.5]…”
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Uniaxial anisotropy and low-temperature antiferromagnetism of Mn2BO4 single crystal by Kazak, N.V., Platunov, M.S., Knyazev, Yu.V., Ivanova, N.B., Bayukov, O.A., Vasiliev, A.D., Bezmaternykh, L.N., Nizhankovskii, V.I., Gavrilkin, S.Yu, Lamonova, K.V., Ovchinnikov, S.G.

“…The Mn2BO4 single crystals have been grown by the flux technique. A careful study of the crystal structure and magnetic properties have been carried out. The…”
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Study of mixed-valence Mn2BO4 using XRD, XPS and XAFS spectroscopies by Kazak, N.V., Platunov, M.S., Knyazev, Yu.V., Moshkina, E.M., Solovyov, L.A., Vereshchagin, S.N., Mikhlin, Yu.L., Veligzhanin, A.A., Trigub, A.L., Ovchinnikov, S.G.

“…The valence states and local structure around Mn atoms in mixed-valence Mn2BO4 have been studied by temperature dependent X-ray powder diffraction (XRPD),…”
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Spin-glass behavior of warwickite MgFeBO4 and CoFeBO4 crystals observed by Mössbauer spectroscopy by Lyubutin, I.S., Korotkov, N. Yu, Frolov, K.V., Kazak, N.V., Platunov, M.S., Knyazev, Yu. V., Bezmaternykh, L.N., Ovchinnikov, S.G., Arauzo, A., Bartolomé, J.

“…•Spin-glass behavior of MgFeBO4 and CoFeBO4 observed by Mössbauer spectroscopy.•Transition temperature TSG increases strongly with Co substitution.•Dynamical…”
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Effect of Fe-substitution on the structure and magnetism of single crystals Mn2-xFexBO4 by Platunov, M.S., Kazak, N.V., Knyazev, Yu.V., Bezmaternykh, L.N., Moshkina, E.M., Trigub, A.L., Veligzhanin, A.A., Zubavichus, Y.V., Solovyov, L.A., Velikanov, D.A., Ovchinnikov, S.G.

“…•Single crystals of of the warwickites Mn2-xFexBO4 (x=0.3, 0.5, 0.7) have been synthesized.•Crystal and local atomic structure has been studied through X-ray…”
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Disorder- and correlation-induced charge carriers localization in oxyborate MgFeBO4, Mg0.5Co0.5FeBO4, CoFeBO4 single crystals by Knyazev, Yu.V., Kazak, N.V., Platunov, M.S., Ivanova, N.B., Bezmaternykh, L.N., Arauzo, A., Bartolomé, J., Ovchinnikov, S.G.

“…•The electrical resistance of the single crystalline warwickites has been measured.•The temperature-induced changes in the charge transfer mechanisms have been…”
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Low-Temperature Schottky Anomalies and the Magnetic State of the p Electrons of Oxygen in Substituted [Gd.sub.0.4][Sr.sub.0.6]Co[O.sub.3 - [delta]] Cobaltites by Orlov, Yu.S, Dudnikov, V.A, Platunov, M.S, Gorev, M.V, Velikanov, D.A, Kazak, N.V, Gavrilkin, S. Yu, Solov'ev, L.A, Veligzhanin, A.A, Vereshchagin, S.N, Ovchinnikov, S.G

“…The XANES spectra (X-ray absorption near-edge spectra) at the K edge of Co and the [L.sub.3] edge of Gd in polycrystalline [Gd.sub.0.4][Sr.sub.0.6]Co[O.sub.3 -…”
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Crystal structure and magnetic properties of Mn substituted ludwigite Co3O2BO3 by Knyazev, Yu.V., Ivanova, N.B., Kazak, N.V., Platunov, M.S., Bezmaternykh, L.N., Velikanov, D.А., Vasiliev, А.D., Ovchinnikov, S.G., Yurkin, G.Yu

“…The needle shape single crystals Co3−x MnxO2BO3 with ludwigite structure have been prepared. According to the X-ray diffraction data the preferable character…”
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Crystal structure and magnetization of a [Co.sub.3][B.sub.2][O.sub.6] single crystal by Kazak, N.V, Platunov, M.S, Ivanova, N.B, Knyazev, Yu. V, Bezmaternykh, L.N, Eremin, E.V, Vasil'ev, A.D, Bayukov, O.A, Ovchinnikov, S.G, Velikanov, D.A, Zubavichus, Ya. V

“…The crystal structure and magnetic properties of [Co.sub.3][B.sub.2][O.sub.6] single crystals are studied. Orthorhombic symmetry with space group Pnnm is…”
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Effect of the diamagnetic dilution on the magnetic ordering and electrical conductivity in the [Co.sub.3][O.sub.2]B[O.sub.3]: Ga Ludwigite by Ivanova, N.B, Platunov, M.S, Knyazev, Yu. V, Kazak, N.V, Bezmaternykh, L.N, Vasiliev, A.D, Ovchinnikov, S.G, Nizhankovskii, V.I

“…Single crystals of cobalt ludwigite [Co.sub.3][O.sub.2]B[O.sub.3] with diamagnetic substitution of [Ga.sup.3+] ions for a part of the cobalt ions have been…”
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Crystal structure and magnetic anisotropy of Ludwigite [Co.sub.2]Fe[O.sub.2]B[O.sub.3] by Ivanova, N.B, Kazak, N.V, Knyazev, Yu.V, Velikanov, D.A, Bezmaternykh, L.N, Ovchinnikov, S.G, Vasiliev, A.D, Platunov, M.S, Bartolome, J, Patrin, G.S

“…[Co.sub.3][O.sub.2]B[O.sub.3] and [Co.sub.2]Fe[O.sub.2]B[O.sub.3] single crystals with a ludwigite structure are fabricated, and their crystal structure and…”
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