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Solid Solutions Ca12Al14O33±δ: V5+, Mo5+

  • A. S. TolkachevaEmail author
  • S. N. Shkerin
  • S. V. Plaksin
  • A. A. Pankratov
  • N. I. Moskalenko
Article
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Solid solutions of composition Ca12-x(Al14Vx)O33+δ (0 ≤ x ≤ 0.07) were synthesized. The V oxidation state in the solid solution was found using a combination of methods. The principle for filling mayenite crystallographic positions with dopant proposed that V cations replace a few Al positions, presumably in octahedral coordination. The temperature dependence of Ca11.93(Al14V0.07)O33+δ electrical conductivity was studied by impedance spectroscopy. The electrical conductivity of V-doped mayenite was shown to increase by an order of magnitude.

Keywords

impedance spectroscopy solid solution mayenite Ca12Al14O33 

Notes

Acknowledgments

The work used equipment at the Composition of Matter Common Use Center at the Institute of High-Temperature Electrochemistry, UrB, RAS. We thank D. G. Kellerman and E. V. Zabolotskaya, staff members of the Laboratory of Quantum Chemistry and Spectroscopy, Institute of Solid-State Chemistry, UrB, RAS, for assistance with certifying the samples using magnetochemistry and EPR. The work was financially supported by RFBR No. 17-03-01280.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • A. S. Tolkacheva
    • 1
    • 2
    Email author
  • S. N. Shkerin
    • 1
  • S. V. Plaksin
    • 1
  • A. A. Pankratov
    • 1
  • N. I. Moskalenko
    • 1
  1. 1.Institute of High-Temperature Electrochemistry, Ural Branch, Russian Academy of SciencesEkaterinburgRussia
  2. 2.Institute of New Materials and TechnologiesUral Federal UniversityEkaterinburgRussia

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