期刊
MODERN PHYSICS LETTERS B
卷 34, 期 34, 页码 -出版社
WORLD SCIENTIFIC PUBL CO PTE LTD
DOI: 10.1142/S0217984920503935
关键词
Equation of state; TiC; HfC; high pressure
资金
- Project of Ph.D. special research of Sichuan University of Arts and Science of China [2019BS006Z]
- Chinese Academy of Sciences [KJCX2SW-N03, KJCX2-SW-N20]
The equation of state (EOS) of HfC and nanosized TiC at high pressure has been studied by means of synchrotron radiation X-ray diffraction (XRD) in a diamond anvil cell (DAC) at ambient temperature, and density functional theory (DFT) calculations. XRD analysis showed that the cubic structure of HfC and nanosized TiC maintained to the maximum pressures. The XRD data yield a bulk modulus K-0 = 286.2(4.8) GPa with K-0 ' = 3.65(0.31) of HfC. In addition, the bulk modulus of nanosized TiC derived from XRD data is K-0 = 282.9(2.1) GPa with K-0 ' = 3.95(0.14).
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