Startseite The relationship between ionic conductivity and structural characteristics of melt-grown KR3F10 (R = Tb, Dy, Ho, Y) single crystals
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The relationship between ionic conductivity and structural characteristics of melt-grown KR3F10 (R = Tb, Dy, Ho, Y) single crystals

  • Denis N. Karimov EMAIL logo , Irina I. Buchinskaya und Nikolay I. Sorokin
Veröffentlicht/Copyright: 26. August 2022
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Zeitschrift für Kristallographie - Crystalline Materials
Aus der Zeitschrift Zeitschrift für Kristallographie - Crystalline Materials Band 237 Heft 10-12

Abstract

The temperature dependences of the ionic electrical conductivity of fluorite-type (sp. gr. F m 3 ‾ m , Z = 8) KDy3F10 and KHo3F10 single crystals grown by the Bridgman technique have been studied by impedance spectroscopy for the first time. The correlation between the conductometric and structural characteristics of KR3F10 (R = Tb, Dy, Ho, Y) crystal family from the point of view of the observed size effect in the ionic conductivity is discussed. With decrease in the unit-cell volume V1F per fluorine atom in a series of crystals with R = Tb, Dy, Ho and Y, the activation energy Eσ of ion transfer decreases from 1.57 to 1.16 eV respectively and the fluorine-ion conductivity value increases from 3.0 × 10−5 to 4.4 × 10−4 S cm at 773 K, i.e. the nature of the conductivity change is linearly antibatic. This phenomenon can be useful for developing approaches and search strategies for new ionic conductors.

Keywords: fluoride single crystal; fluorine-ion conductivity; fluorite-type structure; growth from melt; impedance spectroscopy; rare earth ions
Corresponding author: Denis N. Karimov, Shubnikov Institute of Crystallography, Federal Scientific Research Centre «Crystallography and Photonics» of Russian Academy of Sciences, 59 Leninskiy Prospect, 119333, Moscow, Russia, E-mail:

Funding source: Ministry of Higher Education and Science of the Russian Federation

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This research was supported by the Ministry of Higher Education and Science of the Russian Federation within the State assignment of the Federal Scientific Research Centre «Crystallography and Photonics» of the Russian Academy of Sciences using the equipment of the Shared Research Center FSRC «Crystallography and Photonics» RAS.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2022-05-06
Accepted: 2022-08-10
Published Online: 2022-08-26
Published in Print: 2022-11-25

© 2022 Walter de Gruyter GmbH, Berlin/Boston

Artikel in diesem Heft

  1. Frontmatter
  2. In this issue
  3. Micro Review
  4. A bibliographic survey of the supramolecular architectures sustained by delocalised C–I⋯π(arene) interactions in metal-organic crystals
  5. Organic and Metalorganic Crystal Structures (Original Paper)
  6. The cluster structure of crystalline phases according to TGA/DTA and XPS data in isodimorphic substitution series [Cu x Ni(1−x){N(CH2PO3)3}]Na4·nH2O (x = 0 … 1)
  7. The synthesis, crystal structure and conformation analysis of triclopyr ethyl ester
  8. Inorganic Crystal Structures (Original Paper)
  9. Revisiting the structure of (±)-[Co(en)3]I3·H2O – X-ray crystallographic and second-Harmonic results
  10. Multiple strongly coupled antiferromagnetic spin S = 1/2 dimers in liroconite Cu2Al(As,P)O4(OH)4·4H2O
  11. Magnesium-rich intermetallic compounds RE3Ag4Mg12 (RE = Y, La–Nd, Sm–Dy, Yb) and AE3Ag4Mg12 (AE = Ca, Sr)
  12. Letters
  13. The relationship between ionic conductivity and structural characteristics of melt-grown KR3F10 (R = Tb, Dy, Ho, Y) single crystals
  14. New and refined bond valence parameters for Te4+–F−, Te4+–S2− and Te4+–Se2− ion pairs
https://doi.org/10.1515/zkri-2022-0032
Schlagwörter für diesen Artikel
fluoride single crystal; fluorine-ion conductivity; fluorite-type structure; growth from melt; impedance spectroscopy; rare earth ions

Artikel in diesem Heft

  1. Frontmatter
  2. In this issue
  3. Micro Review
  4. A bibliographic survey of the supramolecular architectures sustained by delocalised C–I⋯π(arene) interactions in metal-organic crystals
  5. Organic and Metalorganic Crystal Structures (Original Paper)
  6. The cluster structure of crystalline phases according to TGA/DTA and XPS data in isodimorphic substitution series [Cu x Ni(1−x){N(CH2PO3)3}]Na4·nH2O (x = 0 … 1)
  7. The synthesis, crystal structure and conformation analysis of triclopyr ethyl ester
  8. Inorganic Crystal Structures (Original Paper)
  9. Revisiting the structure of (±)-[Co(en)3]I3·H2O – X-ray crystallographic and second-Harmonic results
  10. Multiple strongly coupled antiferromagnetic spin S = 1/2 dimers in liroconite Cu2Al(As,P)O4(OH)4·4H2O
  11. Magnesium-rich intermetallic compounds RE3Ag4Mg12 (RE = Y, La–Nd, Sm–Dy, Yb) and AE3Ag4Mg12 (AE = Ca, Sr)
  12. Letters
  13. The relationship between ionic conductivity and structural characteristics of melt-grown KR3F10 (R = Tb, Dy, Ho, Y) single crystals
  14. New and refined bond valence parameters for Te4+–F−, Te4+–S2− and Te4+–Se2− ion pairs
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