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Synthesis and Electrical Conductivity of Nanocrystalline Scandium Fluoride

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1. Title Title of document Synthesis and Electrical Conductivity of Nanocrystalline Scandium Fluoride
2. Creator Author's name, affiliation, country N. I. Sorokina; Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics of NRC “Kurchatov Institute”; Russian Federation
2. Creator Author's name, affiliation, country I. I. Buchinskaya; Shubnikov Institute of Crystallography of Kurchatov Complex of Crystallography and Photonics of NRC “Kurchatov Institute”; Russian Federation
3. Subject Discipline(s)
3. Subject Keyword(s) scandium fluoride; nanocrystals; ionic conductivity; X-ray powder diffraction; impedance; spectroscopy
4. Description Abstract

Phase-pure ScF3 nanocrystals (ReO3 structure, sp. gr. 
) with an average grain size of ~20 nm and unit-cell parameter a = 4.0054 ± 0.0002 Å were prepared by a mild chemical method (precipitation from aqueous ScCl3 by HF). The nanopowders were cold-pressed into ceramic compacts and their ionic conductivity was measured and determined to be 1.0 × 10–5 S/cm at 673 K. The activation energy for ion transport in the ceramics is 1.09 ± 0.05 eV. The electrical conductivity of nanocrystalline ScF3 exceeds that of microcrystalline and single-crystal scandium fluoride by 25 and 250 times, respectively.
5. Publisher Organizing agency, location The Russian Academy of Sciences
6. Contributor Sponsor(s)
7. Date (DD-MM-YYYY) 01.08.2023
8. Type Status & genre Peer-reviewed Article
8. Type Type Unknown
9. Format File format
10. Identifier Uniform Resource Identifier https://rjsvd.com/0002-337X/article/view/668178
10. Identifier Digital Object Identifier (DOI) 10.31857/S0002337X23080158
10. Identifier eLIBRARY Document Number (EDN) XNRPOS
11. Source Title; vol., no. (year) Neorganičeskie materialy; Vol 59, No 8 (2023)
12. Language English=en
13. Relation Supp. Files (97KB)
(205KB)
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14. Coverage Geo-spatial location, chronological period, research sample (gender, age, etc.)
15. Rights Copyright and permissions Copyright (c) 2023 Н.И. Сорокин, И.И. Бучинская