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X-ray Photoelectron Spectroscopy of Selenates La2O2SeO4 and Pr2O2SeO4

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Abstract

New selenates La2O2SeO4 and Pr2O2SeO4, as well as selenite PbSe4+O3 and selenate PbSe6+O4, have been studied by X-ray photoelectron spectroscopy (XPS). The elemental and ionic compositions of new selenates containing Se6+, La3+, and Pr3+ ions have been confirmed on the basis of XPS parameters of the core and valence electrons. The reduction of Se6+ ions on the surface of selenite samples to Se4+ ions under X-ray radiation in the spectrometer chamber has been studied. It has been demonstrated that, unlike the PbSe6+O4 selenate, the PbSe4+O3 selenite is stable to X-ray radiation. It has been shown that La2O2SeO4 is more stable in air than Pr2O2SeO4.

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Funding

This work was supported by the Russian Foundation for Basic Research (project no. 20-03-00333) using equipment purchased with funds from the Moscow University Development Program.

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Authors and Affiliations

  1. Moscow State University, 119991, Moscow, Russia

    Yu. A. Teterin, K. I. Maslakov, D. O. Charkin, S. N. Kalmykov & V. G. Petrov

  2. National Research Center Kurchatov Institute, 123182, Moscow, Russia

    Yu. A. Teterin, A. Yu. Teterin, S. N. Kalmykov & K. E. Ivanov

  3. Saint Petersburg State University, 199155, Saint Petersburg, Russia

    O. I. Siidra

  4. Center of Nanomaterial Science, Federal Research Center Kola Scientific Center, Russian Academy of Sciences, 184209, Apatity, Russia

    O. I. Siidra

Authors
  1. Yu. A. Teterin
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  2. K. I. Maslakov
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  3. D. O. Charkin
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  4. A. Yu. Teterin
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  5. S. N. Kalmykov
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  6. K. E. Ivanov
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Correspondence to Yu. A. Teterin.

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Translated by G. Kirakosyan

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Teterin, Y.A., Maslakov, K.I., Charkin, D.O. et al. X-ray Photoelectron Spectroscopy of Selenates La2O2SeO4 and Pr2O2SeO4 . Russ. J. Inorg. Chem. 66, 525–531 (2021). https://doi.org/10.1134/S0036023621040239

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