High-pressure synthesis of dysprosium carbides

Fariia Iasmin Akbar*, Alena Aslandukova, Andrey Aslandukov, Yuqing Yin, Florian Trybel, Saiana Khandarkhaeva, Timofey Fedotenko, Dominique Laniel, Maxim Bykov, Elena Bykova, Natalia Dubrovinskaia, Leonid Dubrovinsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract / Description of output

Chemical reactions between dysprosium and carbon were studied in laser-heated diamond anvil cells at pressures of 19, 55, and 58 GPa and temperatures of ∼2500 K. In situ single-crystal synchrotron X-ray diffraction analysis of the reaction products revealed the formation of novel dysprosium carbides, Dy 4C 3 and Dy 3C 2, and dysprosium sesquicarbide Dy 2C 3 previously known only at ambient conditions. The structure of Dy 4C 3 was found to be closely related to that of dysprosium sesquicarbide Dy 2C 3 with the Pu 2C 3-type structure. Ab initio calculations reproduce well crystal structures of all synthesized phases and predict their compressional behavior in agreement with our experimental data. Our work gives evidence that high-pressure synthesis conditions enrich the chemistry of rare earth metal carbides.

Original languageEnglish
Article number1210081
Pages (from-to)1-9
Number of pages9
JournalFrontiers in chemistry
Volume11
DOIs
Publication statusPublished - 13 Jun 2023

Keywords / Materials (for Non-textual outputs)

  • carbides
  • diamond anvil cell
  • dysprosium carbide
  • high-pressure
  • lanthanides carbides
  • rare-earth carbides
  • rare-earth elements

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