TY  - JOUR
AU  - Chanyshev, Artem
AU  - Martirosyan, Naira
AU  - Wang, Lin
AU  - Chakraborti, Amrita
AU  - Purevjav, Narangoo
AU  - Wang, Fei
AU  - Kim, Eun Jeong
AU  - Tang, Hu
AU  - Fedotenko, Timofey
AU  - Bhat, Shrikant
AU  - Farla, Robert
AU  - Katsura, Tomo
TI  - Thermal equation of state of cubic silicon carbide at high pressures
JO  - ChemPhysChem
VL  - 25
IS  - 9
SN  - 1439-4235
CY  - Weinheim
PB  - Wiley-VCH Verl.
M1  - PUBDB-2024-01090
SP  - e202300604
PY  - 2024
AB  - We have performed in situ X-ray diffraction measurements of cubic silicon carbide (SiC) with a zinc-blende crystal structure (B3) at high pressures and temperatures using multi-anvil apparatus. The ambient volume inferred from the compression curves is smaller than that of the starting material. Using the 3<sup>rd</sup>-order Birch-Murnaghan equation of state and the Mie-Grüneisen-Debye model, we have determined the thermoelastic parameters of the B3-SiC to be K<sub>0</sub>=228±3 GPa, K<sub>0</sub>’,=4.4±0.4, q=0.27±0.37, where K<sub>0</sub>, K<sub>0</sub>’ and q are the isothermal bulk modulus, its pressure derivative and logarithmic volume dependence of the Grüneisen parameter, respectively. Using the 3rd-order Birch-Murnaghan EOS with the thermal expansion coefficient, the thermoelastic parameters have been found as K<sub>0</sub>=221±3 GPa, K<sub>0</sub>’,=5.2±0.4, α<sub>0</sub>=0.90±0.02 ⋅ 10<sup>−5</sup> ⋅ K<sup>−1</sup>, where α<sub>0</sub> is the thermal expansion coefficient at room pressure and temperature. We have determined that paired B3-SiC – MgO calibrants can be used to estimate pressure and temperature simultaneously in ultrahigh-pressure experiments up to 60 GPa. 
LB  - PUB:(DE-HGF)16
C6  - pmid:38426668
UR  - <Go to ISI:>//WOS:001175926100001
DO  - DOI:10.1002/cphc.202300604
UR  - https://bib-pubdb1.desy.de/record/604409
ER  -