TY  - JOUR
AU  - Akbar, Fariia Iasmin
AU  - Aslandukova, Alena
AU  - Aslandukov, Andrey
AU  - Yin, Yuqing
AU  - Trybel, Florian
AU  - Khandarkhaeva, Saiana
AU  - Fedotenko, Timofey
AU  - Laniel, Dominique
AU  - Bykov, Maxim
AU  - Bykova, Elena
AU  - Dubrovinskaia, Natalia
AU  - Dubrovinsky, Leonid
TI  - High-pressure synthesis of dysprosium carbides
JO  - Frontiers in Chemistry
VL  - 11
SN  - 2296-2646
CY  - Lausanne
PB  - Frontiers Media
M1  - PUBDB-2023-05992
SP  - 1210081
PY  - 2023
AB  - 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<sub>4</sub>C<sub>3</sub> and Dy<sub>3</sub>C<sub>2</sub>, and dysprosium sesquicarbide Dy<sub>2</sub>C<sub>3</sub> previously known only at ambient conditions. The structure of Dy<sub>4</sub>C<sub>3</sub> was found to be closely related to that of dysprosium sesquicarbide Dy<sub>2</sub>C<sub>3</sub> with the Pu<sub>2</sub>C<sub>3</sub>-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.  
LB  - PUB:(DE-HGF)16
C6  - 37383952
UR  - <Go to ISI:>//WOS:001079510900001
DO  - DOI:10.3389/fchem.2023.1210081
UR  - https://bib-pubdb1.desy.de/record/594852
ER  -