%0 Journal Article
%A Chanyshev, Artem
%A Martirosyan, Naira
%A Wang, Lin
%A Chakraborti, Amrita
%A Purevjav, Narangoo
%A Wang, Fei
%A Kim, Eun Jeong
%A Tang, Hu
%A Fedotenko, Timofey
%A Bhat, Shrikant
%A Farla, Robert
%A Katsura, Tomo
%T Thermal equation of state of cubic silicon carbide at high pressures
%J ChemPhysChem
%V 25
%N 9
%@ 1439-4235
%C Weinheim
%I Wiley-VCH Verl.
%M PUBDB-2024-01090
%P e202300604
%D 2024
%X 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. 
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:38426668
%U <Go to ISI:>//WOS:001175926100001
%R 10.1002/cphc.202300604
%U https://bib-pubdb1.desy.de/record/604409