Equations of state of novel solids synthesized under extreme pressure_temperature conditions

30th International Conference on Interaction of Intense Energy Fluxes with Matter

Kurakevych, O.O.^1 ; Godec, Y.Le.^1 ; Solozhenko, V.L.^2

Institut de Minéralogie, de Physique des Matériaux et de Cosmochimie, UPMC Sorbonne Universités, UMR CNRS 7590, Muséum National d'Histoire Naturelle, IRD UMR 206, Paris

75005, France^1

Laboratoire des Sciences des Procédés et des Matériaux, CNRS, Université Paris Nord, Villetaneuse

93430, France^2

关键词: Bonding type;    Clathrates;    Diamond-like;    Extreme pressure;    Ionic semiconductors;    Open frameworks;    Pressure-volume-temperatures;    Semi-empirical;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/653/1/012080/pdf
DOI  :  10.1088/1742-6596/653/1/012080

来源: IOP

【 摘 要 】

The pressure-volume-temperature equations of state have been constructed by combining experimental data and semiempirical estimations for a number of compounds recently synthesized under extreme pressure-temperature conditions. The solids with various bonding types were considered: covalent hard and superhard boron-rich and diamond-like compounds (e.g. B6O, B13N2, BP, c-BC5, and nano-cBN), ionic semiconductors (e.g. Mg2C and Mg2C3), as well as intercalation compounds (e.g. clathrates Na4Si24and Na24+xSi136), and simple substances (e.g. boron allotropes γ-B28and t'-B52, and open-framework silicon allotrope o-Si24with quasi-direct bandgap). We also showed how the reliable p-V-T equations of state may be constructed using different types of data available.