Journal Article

PUBDB-2023-05992

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png High-pressure synthesis of dysprosium carbides

Akbar, F. I. (Corresponding author)Extern* ; Aslandukova, A.Extern* ; Aslandukov, A. ; Yin, Y.Extern* ; Trybel, F. ; Khandarkhaeva, S.Extern* ; Fedotenko, T.DESY* ; Laniel, D.Extern* ; Bykov, M.Extern* ; Bykova, E.Extern* ; Dubrovinskaia, N. ; Dubrovinsky, L.Extern*

2023
Frontiers Media Lausanne

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Please use a persistent id in citations: doi:10.3389/fchem.2023.1210081  doi:10.3204/PUBDB-2023-05992

Abstract: 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$_4$C$_3$ and Dy$_3$C$_2$, and dysprosium sesquicarbide Dy$_2$C$_3$ previously known only at ambient conditions. The structure of Dy$_4$C$_3$ was found to be closely related to that of dysprosium sesquicarbide Dy$_2$C$_3$ with the Pu$_2$C$_3$-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.

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)
2. Experimentebetreuung PETRA III (FS-PE)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)

Experiment(s):

1. PETRA Beamline P02.2 (PETRA III)

Appears in the scientific report 2023

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