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Structure and Physical Properties of Mg-Containing Oxymolybdates La2MoO6

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Abstract

Oxymolybdates La2MoO6, both pure and doped with magnesium, have been obtained by the flux crystallization method and solid-phase synthesis as single crystals and polycrystals, respectively. The compounds are described by X-ray diffraction analysis, thermogravimetry, and differential scanning calorimetry; their conducting properties have been investigated. A model of the structure of magnesium-doped La2MoO6 single crystals is proposed. Incorporation of divalent magnesium atoms into the sites of hexavalent molybdenum atoms in the La2MoO6 structure leads to the formation of oxygen vacancies and a slight increase in the conductivity of doped samples in comparison with pure crystals. The compounds under study have hygroscopic properties.

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ACKNOWLEDGMENTS

This study was performed using equipment of the Collective-Use Center of the Federal Scientific Research Centre “Crystallography and Photonics” of the Russian Academy of Sciences.

Funding

This study was supported by the Ministry of Science and Higher Education of the Russian Federation (project no. RFMEFI62119X0035) within a State assignment for the Federal Scientific Research Centre “Crystallography and Photonics” of the Russian Academy of Sciences in the part concerning the analysis of structural features and by the Russian Foundation for Basic Research, project no. 18-29-12005, in the part concerning the growth of crystals and investigation of their properties.

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Authors and Affiliations

  1. Moscow State University, 119991, Moscow, Russia

    E. I. Orlova, E. P. Kharitonova & V. I. Voronkova

  2. Shubnikov Institute of Crystallography, Federal Scientific Research Centre “Crystallography and Photonics”, Russian Academy of Sciences, 119333, Moscow, Russia

    N. I. Sorokina, T. A. Sorokin & A. M. Antipin

Authors
  1. E. I. Orlova
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  2. E. P. Kharitonova
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  3. N. I. Sorokina
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  4. T. A. Sorokin
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  5. A. M. Antipin
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  6. V. I. Voronkova
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Corresponding author

Correspondence to V. I. Voronkova.

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Translated by A. Sin’kov

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Orlova, E.I., Kharitonova, E.P., Sorokina, N.I. et al. Structure and Physical Properties of Mg-Containing Oxymolybdates La2MoO6 . Crystallogr. Rep. 65, 697–703 (2020). https://doi.org/10.1134/S1063774520050168

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  • DOI: https://doi.org/10.1134/S1063774520050168

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