30 research outputs found

    Synthesis and catalytic activity of lanthanum manganite doped with alkali metals

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    The research results were funded by RFBR according to the research project № 19-03-00230, and were obtained in the framework of the state task of the Ministry of Ed-ucation and Science of Russia (project №4.6653.2017/8.9) and UrFU program of competitiveness enhancement (project code 14.594.21.0011)

    INVESTIGATION OF LA0.9M0.1MNO3±Y (M = LI – CS) SYNTHESIS CHARACTERISTICS AND CHARGE GENERATION POSSESS DURING THE COMBUSTION OF ORGANO-NITRATE PRECURS

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    The relationship between the composition of the precursor (polymer component, φ), the features of the synthesis process (charge generation, maximum temperature, waste gases) and physico-chemical properties of the complex oxide La0.9M0.1MnO3±y (M=Li,Na,K,Rb,Cs) was studied.The research results were funded by RFBR according to the research project № 19-03-00230

    Study of acute and subacute action of iron-molybdenum nanocluster polyoxometalates

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    There were no significant deviations from the norm in the functional state of the liver, kidneys, and pancreas in the study of the acute toxicity of iron-molybdenum buckyballs intended for targeted drug delivery. No accumulation of nanoparticles or deviation from the norm in any investigated parameter was detected in the study of subacute toxicity. © 2013 Pleiades Publishing, Ltd

    Synthesis of lanthanum manganite powders via combustion reactions: some aspects of the influence of magnetic field and charge generation in precursors on the formation of properties

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    The mutual influence of the process of electric charge generation in nitrate organic precursors and a constant external magnetic field on the magnetic properties formation was considered for lanthanum strontium manganite La0.7 Sr0.3 MnO3±y powders obtained via combustion reactions. The investigated properties of the obtained samples include hysteresis, magnetocaloric and magnetoresistive effects. The correlation between formation process of extended ensembles of nanoparticles and the functional properties of complex oxide materials was also discussed. The manifestation of a strong magneto-gas-selective effect has been ob-served during the combustion of precursors in a constant magnetic field, which affects the charge generation process. © Ostroushko A.A., Gagarin I.D., Kudyukov E.V., Zhulanova T.Yu., Permyakova A.E., Russkikh O.V., 2023.Russian Science Foundation, RSF: 22-23-00718ABSTRACT The mutual influence of the process of electric charge generation in nitrate organic precursors and a constant external magnetic field on the magnetic properties formation was considered for lanthanum strontium manganite La0.7Sr0.3MnO3±y powders obtained via combustion reactions. The investigated properties of the obtained samples include hysteresis, magnetocaloric and magnetoresistive effects. The correlation between formation process of extended ensembles of nanoparticles and the functional properties of complex oxide materials was also discussed. The manifestation of a strong magneto-gas-selective effect has been observed during the combustion of precursors in a constant magnetic field, which affects the charge generation process. KEYWORDS complex oxides, lanthanum manganite, synthesis, combustion reactions, nitrate-organic systems, nanoparticles, charges generation, magnetic properties, magneto-gas selective effect ACKNOWLEDGEMENTS The research was financially supported by a grant from the Russian Science Foundation (Project No. 22-23-00718). The research was carried out using the equipment of the Ural Center for Collective Use “Modern Nanotechnologies”

    EFFECT OF SYNTHESIS CONDITIONS ON THE MAGNETIC PROPERTIES OF PEROVSKITES BASED ON LANTHANUM MANGANITE DOPED WITH ALKALI METAL IONS (Li-Cs)

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    Complex oxides with perovskite structure La0.9M0.1MnO3±y (M = Li, Na, K, Rb, Cs) were synthesized by pyrolysis of polymer-salt compositions. Magnetization studies were performed to check the impact of the alkali ion dopants as well as synthesis conditions.Работа выполнена при финансовой поддержке гранта РНФ № 22-23-00718

    Features of Synthesis of Complex Oxides with Magnetoplumbite Structure in Combustion Reactions of Nitrate-Organic Precursors

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    In this work, we studied the processes of synthesis of hexaferrites from precursors. It has been established that the combustion of precursors is accompanied by the generation of charges and a number of other phenomena.Исследование выполнено за счет гранта Российского научного фонда № 22-23-00718

    Erratum to: Interaction between Dioxane and Nanocluster Polyoxomolybdates and Their Composites Containing Water-Soluble Polymers (Russian Journal of Physical Chemistry A, (2020), 94, 4, (762-771), 10.1134/S0036024420040159)

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    Page 766, Table 1, limiting sorption values for methanol and acetone of Mo72Fe30 should read 6 and 2, respectively: Mo72Fe30 6/–1 0.5/–0.3 2/–0.5 3.5/–4 The original article can be found online at https://doi.org/10.1134/S0036024420040159. © 2020, Pleiades Publishing, Ltd
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